Summary
While regressing my original issue [sidefx.com] with wackiness after enabling FileVault over an existing installation of Houdini I ran into even wackier issues after disabling FileVault on the same installation, eventually leading to a segmentation fault on application launch even after uninstalling and reinstalling Houdini.

Steps to Reproduce
1.) From a FileVault'd user account install Houdini 9.5.230
2.) Disable FileVault
3.) Launch Houdini

Configuration
• MacBook Pro 2.4GHz / 4GB RAM
• Nvidia GeForce 8600M GT
• Mac OS X 10.5.5

Results
The application loads but when it draws the main UI crashes with a segmentation fault and prompting the user with a fatal error dialog:

At the time of failure the UI appears to have misdrawn portions of the framebuffer or reused portions without reinitializing:

From the Houdini authored crash log:
Crash report from topher; Houdini Master Version 9.5.230
2 libHoudiniUI.dylib 0x00000000041a1ae8 AP_Interface::coredumpHandler(UTsignalHandlerArg) + 920
3 libHoudiniUT.dylib 0x00000000049a71ab UT_Signal::UT_ComboSignalHandler:perator()(int, __siginfo*, void*) const + 59
4 libHoudiniUT.dylib 0x00000000049a73e8 UT_Signal::processSignal(int, __siginfo*, void*) + 168
5 libSystem.B.dylib 0x0000000080fad34a _sigtramp + 26
6 ??? 0x0000000000000000 0x0 + 0
7 libHoudiniUI.dylib 0x00000000042fd18c UI_IconSVG::initTexture(RE_Render*, int, int) + 1900
8 libHoudiniUI.dylib 0x00000000042f42f3 UI_IconBase::preloadIcons() + 323
9 libHoudiniUI.dylib 0x0000000004390382 UI_Window::doRedraw() + 738
10 libHoudiniUI.dylib 0x00000000041afbc9 OSX_Window::doRedraw() + 105
11 libHoudiniUI.dylib 0x000000000433b52b UI_Queue::doWindowRedraws() + 555
12 libHoudiniUI.dylib 0x000000000433b6f5 UI_Queue::processNextEvent() + 229
13 libHoudiniUI.dylib 0x000000000433b8e4 UI_Queue::drain() + 52
14 libHoudiniUI.dylib 0x000000000433e1c5 UI_Queue::drainEvents(bool, bool) + 117
15 libHoudiniAPPS2.dylib 0x00000000003834e3 OPUI_MainApp::loadFilesAfterUiOpen(UI_Event*) + 51
16 libHoudiniUI.dylib 0x000000000433b6d2 UI_Queue::processNextEvent() + 194
17 libHoudiniUI.dylib 0x000000000433b8e4 UI_Queue::drain() + 52
18 libHoudiniUI.dylib 0x000000000433e1c5 UI_Queue::drainEvents(bool, bool) + 117
19 libHoudiniUI.dylib 0x00000000041abba3 OH_UIeventHandler::~OH_UIeventHandler() + 2259
20 libHoudiniUI.dylib 0x00000000041abd1c OH_UIeventHandler::~OH_UIeventHandler() + 2636
21 Foundation 0x00000000816ed5b0 NSZoneMalloc + 1744
22 CoreFoundation 0x000000008448b796 _CFXNotificationPostNotification + 566
23 Foundation 0x00000000816ea866 NSPopAutoreleasePool + 4726
24 AppKit 0x0000000081a9a3bf _NSSubclassOverridesSelector + 8634
25 AppKit 0x0000000081a9a2ea _NSSubclassOverridesSelector + 8421
26 AppKit 0x0000000081a10c9c _NSInitializeKillRing + 6776
27 AppKit 0x0000000081a10581 _NSInitializeKillRing + 4957
28 Foundation 0x0000000081711807 NSZoneRealloc + 3287
29 Foundation 0x0000000081711625 NSZoneRealloc + 2805
30 AE 0x00000000810e0717 AEDecodeMessage + 841
31 AE 0x00000000810ce36b aeProcessAppleEvent + 529
32 AE 0x00000000810ce20d aeProcessAppleEvent + 179
33 HIToolbox 0x000000008417ad07 AEProcessAppleEvent + 34
34 AppKit 0x0000000081a0de23 _NXKitString + 5980
35 AppKit 0x0000000081a0d583 _NXKitString + 3772
36 AppKit 0x0000000081a07316 _NSSetViewMultiClipDrawingHelper + 4470
37 libHoudiniUI.dylib 0x00000000041a27c4 main + 804
38 houdini 0x00000000000016b4 start + 52

From running Houdini via GDB:
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x00000001c144ccc0
0x00000001047d5239 in PXL_Raster::load ()
(gdb) bt
#0 0x00000001047d5239 in PXL_Raster::load ()
#1 0x00000001042fd18c in UI_IconSVG::initTexture ()
#2 0x00000001042f42f3 in UI_IconBase::preloadIcons ()
#3 0x0000000104390382 in UI_Window::doRedraw ()
#4 0x00000001041afbc9 in OSX_Window::doRedraw ()
#5 0x000000010433b52b in UI_Queue::doWindowRedraws ()
#6 0x000000010433b6f5 in UI_Queue::processNextEvent ()
#7 0x000000010433b8e4 in UI_Queue::drain ()
#8 0x000000010433e1c5 in UI_Queue::drainEvents ()
#9 0x00000001003834e3 in OPUI_MainApp::loadFilesAfterUiOpen ()
#10 0x000000010433b6d2 in UI_Queue::processNextEvent ()
#11 0x000000010433b8e4 in UI_Queue::drain ()
#12 0x000000010433e1c5 in UI_Queue::drainEvents ()
#13 0x00000001041abba3 in - ()
#14 0x00000001041abd1c in - ()
#15 0x00007fff816ed5b0 in _nsnote_callback ()
#16 0x00007fff8448b796 in _CFXNotificationPostNotification ()
#17 0x00007fff816ea866 in - ()
#18 0x00007fff81a9a3bf in - ()
#19 0x00007fff81a9a2ea in - ()
#20 0x00007fff81a10c9c in - ()
#21 0x00007fff81a10581 in - ()
#22 0x00007fff81711807 in - ()
#23 0x00007fff81711625 in _NSAppleEventManagerGenericHandler ()
#24 0x00007fff810e0717 in aeDispatchAppleEvent ()
#25 0x00007fff810ce36b in dispatchEventAndSendReply ()
#26 0x00007fff810ce20d in aeProcessAppleEvent ()
#27 0x00007fff8417ad07 in AEProcessAppleEvent ()
#28 0x00007fff81a0de23 in _DPSNextEvent ()
#29 0x00007fff81a0d583 in - ()
#30 0x00007fff81a07316 in - ()
#31 0x00000001041a27c4 in main ()
(gdb) x/i 0x00000001047d5239
0x1047d5239 <_ZN10PXL_Raster4loadER10UT_IStream+441>: mov (%rax,%rdx,4),%r13d
(gdb) x/i 0x00000001042fd18c
0x1042fd18c <_ZN10UI_IconSVG11initTextureEP9RE_Renderii+1900>: test %al,%al

Regression
• Only occurred after hitting the original issue [sidefx.com] and disabling FileVault
• Once issue occurred uninstalling and reinstalling Houdini had no effect
• System is currently stuck in this issue…

Below is a more complete GDB dump of the failure:

(gdb) run
Starting program: /Applications/Houdini 9.5.230/Houdini.app/Contents/MacOS/houdini
warning: posix_spawn failed, trying execvp, error: 86
Reading symbols for shared libraries . done
Reading symbols for shared libraries + done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x00000001c144ccc0
0x00000001047d5239 in PXL_Raster::load ()

(gdb) bt
#0 0x00000001047d5239 in PXL_Raster::load ()
#1 0x00000001042fd18c in UI_IconSVG::initTexture ()
#2 0x00000001042f42f3 in UI_IconBase::preloadIcons ()
#3 0x0000000104390382 in UI_Window::doRedraw ()
#4 0x00000001041afbc9 in OSX_Window::doRedraw ()
#5 0x000000010433b52b in UI_Queue::doWindowRedraws ()
#6 0x000000010433b6f5 in UI_Queue::processNextEvent ()
#7 0x000000010433b8e4 in UI_Queue::drain ()
#8 0x000000010433e1c5 in UI_Queue::drainEvents ()
#9 0x00000001003834e3 in OPUI_MainApp::loadFilesAfterUiOpen ()
#10 0x000000010433b6d2 in UI_Queue::processNextEvent ()
#11 0x000000010433b8e4 in UI_Queue::drain ()
#12 0x000000010433e1c5 in UI_Queue::drainEvents ()
#13 0x00000001041abba3 in - ()
#14 0x00000001041abd1c in - ()
#15 0x00007fff816ed5b0 in _nsnote_callback ()
#16 0x00007fff8448b796 in _CFXNotificationPostNotification ()
#17 0x00007fff816ea866 in - ()
#18 0x00007fff81a9a3bf in - ()
#19 0x00007fff81a9a2ea in - ()
#20 0x00007fff81a10c9c in - ()
#21 0x00007fff81a10581 in - ()
#22 0x00007fff81711807 in - ()
#23 0x00007fff81711625 in _NSAppleEventManagerGenericHandler ()
#24 0x00007fff810e0717 in aeDispatchAppleEvent ()
#25 0x00007fff810ce36b in dispatchEventAndSendReply ()
#26 0x00007fff810ce20d in aeProcessAppleEvent ()
#27 0x00007fff8417ad07 in AEProcessAppleEvent ()
#28 0x00007fff81a0de23 in _DPSNextEvent ()
#29 0x00007fff81a0d583 in - ()
#30 0x00007fff81a07316 in - ()
#31 0x00000001041a27c4 in main ()

(gdb) info threads
3 process 907 thread 0x5307 0x00007fff80f4e5be in __semwait_signal ()
2 process 907 thread 0x3003 0x00007fff80f4e5be in __semwait_signal ()
* 1 process 907 local thread 0x4e07 0x00000001047d5239 in PXL_Raster::load ()

(gdb) info frame
Stack level 0, frame at 0x7fff5fbfd6e0:
rip = 0x1047d5239 in PXL_Raster::load(UT_IStream&); saved rip 0x1042fd18c
called by frame at 0x7fff5fbfd840
Arglist at 0x7fff5fbfd6d0, args:
Locals at 0x7fff5fbfd6d0, Previous frame's sp is 0x7fff5fbfd6e0
Saved registers:
rbp at 0x7fff5fbfd6d0, rip at 0x7fff5fbfd6d8

(gdb) x 0x7fff5fbfd6e0
0x7fff5fbfd6e0: adc $0xbf,%bh

(gdb) x 0x1047d5239
0x1047d5239 <_ZN10PXL_Raster4loadER10UT_IStream+441>: mov (%rax,%rdx,4),%r13d

(gdb) x 0x1042fd18c
0x1042fd18c <_ZN10UI_IconSVG11initTextureEP9RE_Renderii+1900>: test %al,%al

(gdb) x 0x7fff5fbfd840
0x7fff5fbfd840: add %al,(%rax)

(gdb) x 0x7fff5fbfd6d0
0x7fff5fbfd6d0: xor %bl,%al

(gdb) x 0x7fff5fbfd6d8
0x7fff5fbfd6d8: mov %ss,%ecx

(gdb) info all-reg
rax 0x104d0c9a0 4375759264
rbx 0x12405c230 4899324464
rcx 0x0 0
rdx 0x2f1d00c8 790429896
rsi 0x1 1
rdi 0x1190f9448 4715418696
rbp 0x7fff5fbfd6d0 0x7fff5fbfd6d0
rsp 0x7fff5fbfccc0 0x7fff5fbfccc0
r8 0x1 1
r9 0x0 0
r10 0x1 1
r11 0x7fff5fbfd69c 140734799795868
r12 0x1190f9448 4715418696
r13 0x7fff5fbfd69c 140734799795868
r14 0x0 0
r15 0x7fff701acb20 140735074192160
rip 0x1047d5239 0x1047d5239 <PXL_Raster::load(UT_IStream&)+441>
eflags 0x10246 66118
cs 0x27 39
ss 0x0 0
ds 0x0 0
es 0x0 0
fs 0x10 16
gs 0x48 72
st0 <invalid float value> (raw 0xffff0000000000000000)
st1 0 (raw 0x00000000000000000000)
st2 0 (raw 0x00000000000000000000)
st3 -1 (raw 0xbfff8000000000000000)
st4 1 (raw 0x3fff8000000000000000)
st5 1 (raw 0x3fff8000000000000000)
st6 0 (raw 0x00000000000000000000)
st7 4294967296 (raw 0x401f8000000000000000)
fctrl 0x37f 895
fstat 0x0 0
ftag 0xffff 65535
fiseg 0x8 8
fioff 0xf7cbd5 16239573
foseg 0x10 16
fooff 0x5b427238 1531081272
fop 0x58d 1421
xmm0 {
v4_float = {0, 0, 0, 0},
v2_double = {0, 0},
v16_int8 = ‘\0’ <repeats 15 times>,
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v2_int64 = {0, 0},
uint128 = 0
} (raw 0x00000000000000000000000000000000)
xmm1 {
v4_float = {-nan(0x7fff00), 0, -nan(0x7fffff), 0},
v2_double = {-nan(0xfff0000000000), -nan(0xfffff00000000)},
v16_int8 = “???\000\000\000\000\000????\000\000\000”,
v8_int16 = {-1, -256, 0, 0, -1, -1, 0, 0},
v4_int32 = {-256, 0, -1, 0},
v2_int64 = {-1099511627776, -4294967296},
uint128 = 0xffffff0000000000ffffffff00000000
} (raw 0x00000000ffffffff0000000000ffffff)
xmm2 {
v4_float = {-1.70141183e+38, 0, -nan(0x7f0000), 9.18340949e-41},
v2_double = {-5.4861240687936887e+303, -nan(0xf00000000ffff)},
v16_int8 = “?\000\000\000\000\000\000\000??\000\000\000\000??”,
v8_int16 = {-256, 0, 0, 0, -1, 0, 0, -1},
v4_int32 = {-16777216, 0, -65536, 65535},
v2_int64 = {-72057594037927936, -281474976645121},
uint128 = 0xff00000000000000ffff00000000ffff
} (raw 0xffff00000000ffff00000000000000ff)
xmm3 {
v4_float = {0, 0, 0, 0},
v2_double = {0, 0},
v16_int8 = ‘\0’ <repeats 15 times>,
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v2_int64 = {0, 0},
uint128 = 0
} (raw 0x00000000000000000000000000000000)
xmm4 {
v4_float = {0, 0, 0, 3.21932403e-35},
v2_double = {0, 5.1132036975332395e-316},
v16_int8 = ‘\0’ <repeats 12 times>, “\006+++”,
v8_int16 = {0, 0, 0, 0, 0, 0, 1579, 11051},
v4_int32 = {0, 0, 0, 103492395},
v2_int64 = {0, 103492395},
uint128 = 3110627272399257600
} (raw 0x2b2b2b06000000000000000000000000)
xmm5 {
v4_float = {0, 0, 0, 4.03896783e-28},
v2_double = {0, 1.4920282905224571e-315},
v16_int8 = ‘\0’ <repeats 12 times>, “\022\000\000”,
v8_int16 = {0, 0, 0, 0, 0, 0, 4608, 0},
v4_int32 = {0, 0, 0, 301989888},
v2_int64 = {0, 301989888},
uint128 = 77309411328
} (raw 0x00000012000000000000000000000000)
xmm6 {
v4_float = {1, 0, -1, 576},
v2_double = {0.0078125, -0.0078125019808794605},
v16_int8 = “??\000\000\000\000\000\000??\000\000D\020\000”,
v8_int16 = {16256, 0, 0, 0, -16512, 0, 17424, 0},
v4_int32 = {1065353216, 0, -1082130432, 1141899264},
v2_int64 = {4575657221408423936, -4647714814304452608},
uint128 = 0x3f80000000000000bf80000044100000
} (raw 0x00001044000080bf000000000000803f)
xmm7 {
v4_float = {1, 0, -1, 0},
v2_double = {0.0078125, -0.0078125},
v16_int8 = “??\000\000\000\000\000\000??\000\000\000\000\000”,
v8_int16 = {16256, 0, 0, 0, -16512, 0, 0, 0},
v4_int32 = {1065353216, 0, -1082130432, 0},
v2_int64 = {4575657221408423936, -4647714815446351872},
uint128 = 0x3f80000000000000bf80000000000000
} (raw 0x00000000000080bf000000000000803f)
xmm8 {
v4_float = {0, 0, 0, 0.5},
v2_double = {0, 5.2220990168285998e-315},
v16_int8 = ‘\0’ <repeats 12 times>, “?\000\000”,
v8_int16 = {0, 0, 0, 0, 0, 0, 16128, 0},
v4_int32 = {0, 0, 0, 1056964608},
v2_int64 = {0, 1056964608},
uint128 = 270582939648
} (raw 0x0000003f000000000000000000000000)
xmm9 {
v4_float = {1, 1, -3, 49},
v2_double = {0.007812501848093234, -32.000007899478078},
v16_int8 = “??\000\000??\000\000?@\000\000BD\000”,
v8_int16 = {16256, 0, 16256, 0, -16320, 0, 16964, 0},
v4_int32 = {1065353216, 1065353216, -1069547520, 1111752704},
v2_int64 = {4575657222473777152, -4593671618806153216},
uint128 = 0x3f8000003f800000c040000042440000
} (raw 0x00004442000040c00000803f0000803f)
xmm10 {
v4_float = {0, 0, 0, 1920},
v2_double = {0, 5.7142611265495492e-315},
v16_int8 = ‘\0’ <repeats 12 times>, “D?\000”,
v8_int16 = {0, 0, 0, 0, 0, 0, 17648, 0},
v4_int32 = {0, 0, 0, 1156579328},
v2_int64 = {0, 1156579328},
uint128 = 264174848442368
} (raw 0x0000f044000000000000000000000000)
xmm11 {
v4_float = {0, 0, 0, 1152},
v2_double = {0, 5.6831772038303314e-315},
v16_int8 = ‘\0’ <repeats 12 times>, “D?\000”,
v8_int16 = {0, 0, 0, 0, 0, 0, 17552, 0},
v4_int32 = {0, 0, 0, 1150287872},
v2_int64 = {0, 1150287872},
uint128 = 158621732175872
} (raw 0x00009044000000000000000000000000)
xmm12 {
v4_float = {0, 0, 0, 1920},
v2_double = {0, 5.7142611265495492e-315},
v16_int8 = ‘\0’ <repeats 12 times>, “D?\000”,
v8_int16 = {0, 0, 0, 0, 0, 0, 17648, 0},
v4_int32 = {0, 0, 0, 1156579328},
v2_int64 = {0, 1156579328},
uint128 = 264174848442368
} (raw 0x0000f044000000000000000000000000)
xmm13 {
v4_float = {0, 0, 1.875, 1152},
v2_double = {0, 1.0000002554152161},
v16_int8 = “\000\000\000\000\000\000\000\000??\000\000D?\000”,
v8_int16 = {0, 0, 0, 0, 16368, 0, 17552, 0},
v4_int32 = {0, 0, 1072693248, 1150287872},
v2_int64 = {0, 4607182419950305280},
uint128 = 158621732237375
} (raw 0x000090440000f03f0000000000000000)
xmm14 {
v4_float = {0, 1, 0, 0},
v2_double = {5.2635442471208903e-315, 0},
v16_int8 = “\000\000\000\000??\000\000\000\000\000\000\000\000\000”,
v8_int16 = {0, 0, 16256, 0, 0, 0, 0, 0},
v4_int32 = {0, 1065353216, 0, 0},
v2_int64 = {1065353216, 0},
uint128 = 0x000000003f8000000000000000000000
} (raw 0x00000000000000000000803f00000000)
xmm15 {
v4_float = {0, 1, 0, 0},
v2_double = {5.2635442471208903e-315, 0},
v16_int8 = “\000\000\000\000??\000\000\000\000\000\000\000\000\000”,
v8_int16 = {0, 0, 16256, 0, 0, 0, 0, 0},
v4_int32 = {0, 1065353216, 0, 0},
v2_int64 = {1065353216, 0},
uint128 = 0x000000003f8000000000000000000000
} (raw 0x00000000000000000000803f00000000)
mxcsr 0x1fa3 8099
(gdb)

Is there any additional info I can provide? Should I contact support for this issue or is the forum the best way to provide input?

The forums (except for the beta ones) aren't actively monitored. Once the beta stage finishes, the best way is is to log a bug with all your info through the Submit H9 Bugs page (from the Support menu above).

Filled out a bug report so hopefully there's enough info to get a workaround or fix

The bug submission form [sidefx.com] doesn't list Mac OS X as an operating system choice, so hopefully it will get forwarded as appropriate.

Thanks for the info, was used to submitting bugs via the forums!

Ah, please specify OSX: in the Summary for future bugs then until OSX starts appearing in the OS menu. Thanks!