Hi,

I am trying to run a .hda in maya via the engine.


Loading one of the example .hda from houdini/20.5.435/platform-linux/engine/tools doesn't cause any major problem.


Now, creating my own .hda (just a mountain with the amp parameter) and loading it from documents I get the following from the maya script editor:

PluginManager;
// Automatically starting Houdini Engine server using named pipe.
// Automatically started Houdini Engine server using named pipe at "/usr/tmp/houdini_temp/hapi217234".
// Connected to Houdini Engine server using named pipe at "/usr/tmp/houdini_temp/hapi217234".
// Houdini Engine initialized successfully.
// Houdini version: 20.5.487
// Houdini Engine version: 7.0 (API: 9)
// Error: Geo (ID: 0): /obj/mountain/mountain1
// No geometry generated!
// Error:
// ===================================
// Node Errors, Warnings, and Messages
// ===================================
//
// /obj/mountain/mountain1:
// OP: unknown error: 2
//
// Error: Geo (ID: 0): /obj/mountain/mountain1
// No geometry generated!
// Error:
// ===================================
// Node Errors, Warnings, and Messages
// ===================================
//
// /obj/mountain/mountain1:
// OP: unknown error: 2
//
polyPlane -w 1 -h 1 -sx 10 -sy 10 -ax 0 1 0 -cuv 2 -ch 1;
// Result: pPlane1 polyPlane1
select -add mountain1 ;
// Error: Unexpected error when creating input mesh.
// Error: Geo (ID: 0): /obj/mountain/mountain1
// No geometry generated!
// Error:
// ===================================
// Node Errors, Warnings, and Messages
// ===================================
//
// /obj/mountain/mountain1:
// OP: unknown error: 1
//
// /obj/mountain/mountain1/mountain1:
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 34
// OP: unknown error: 55
// PRM: unknown error: 5
// PRM: unknown error: 5
// OP: unknown error: 55
// PRM: unknown error: 5
// PRM: unknown error: 5
// PRM: unknown error: 5
// PRM: unknown error: 5
// OP: unknown error: 55
// PRM: unknown error: 5
// PRM: unknown error: 5
// OP: unknown error: 55
// PRM: unknown error: 5
// PRM: unknown error: 5
// PRM: unknown error: 5
// PRM: unknown error: 5
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 47
// OP: unknown error: 1
//
// /obj/mountain/mountain1/mountain1/unified_noise_float1/end_if2:
// VOP: unknown error: 0
//
// /obj/mountain/mountain1/mountain1/collect_attributes_to_noise:
// OP: unknown error: 1
//
// /obj/mountain/mountain1/mountain1/collect_attributes_to_noise/attribvop1:
// SOP: unknown error: 4
//
// /obj/mountain/mountain1/mountain1/error1:
// OP: unknown error: 1
//
// /obj/mountain/mountain1/mountain1/OUT:
// OP: unknown error: 1
//
// /obj/mountain/mountain1/mountain1/switchif1:
// OP: unknown error: 1
//
// /obj/mountain/mountain1/output0:
// OP: unknown error: 1
//

The console is putting out these errors:

2025-04-25 15:05:54: Server start error: bind: Address already in use
Can't open dophints.cmd
2025-04-25 15:06:50: OP: unknown error: 2
ERROR: Couldn't open resource file "resources" (No such file or directory)
2025-04-25 15:06:50: OP: unknown error: 2
cpp error: "oplib:/Vop/vectohvec?Vop/vectohvec":15 Unable to include <parameter.ds>

oplib:/Vop/vectohvec?Vop/vectohvec Error(28): script unknown identifier VOP_VEC_INPUT(
2025-04-25 15:07:09: SOP: unknown error: 4
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: SOP: unknown error: 4
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: OP: unknown error: 1
2025-04-25 15:07:09: VOP: unknown error: 0

It looks to me that it just doesn't find the OPs, no?

But how did it with the example file?

If someone could please point me in the right direction.


Thank you!

Can you provide your HDA?

I had a similar issue, and solved it by not using a variable HOUDINI_PATH in my environment.
The clue is

Houdini is unable to find all its libraries.