My enviroment is Ubuntu(Linux),but same problem has occured with houdini17.
Error message is below
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Could not find scene mouse modifier file: SceneMouseModifiers
Unrecognized modifier key token: scene.handle.floor.mirror
Unrecognized modifier key token: scene.handle.rotate.inc_snap
Unrecognized modifier key token: scene.handle.common.scale_delta
Unrecognized modifier key token: scene.handle.orientknob.lock_axis
Unrecognized modifier key token: scene.selector.plane.fullspec.pick_normal
Unrecognized modifier key token: scene.selector.plane.quickspec.align_only
Unrecognized modifier key token: scene.selector.plane.quickspec.move_only
Unrecognized modifier key token: scene.selector.plane.quickspec.point_at
Unrecognized modifier key token: scene.selector.plane.quickspec.sec_point_at
Unrecognized modifier key token: scene.selector.plane.quickspec.sel_point_at
Unrecognized modifier key token: scene.floor.xy
Unrecognized modifier key token: scene.floor.h
Unrecognized modifier key token: scene.common.extend
Unrecognized modifier key token: scene.handle.bbox.mirror
Unrecognized modifier key token: scene.handle.bbox.uniform
Unrecognized modifier key token: scene.handle.crosshair.scope
Unrecognized modifier key token: scene.handle.crop.mirror
Unrecognized modifier key token: scene.handle.crop.restrict
Unrecognized modifier key token: scene.handle.domain.mirror
Unrecognized modifier key token: scene.handle.domain.copy
Unrecognized modifier key token: scene.handle.hose.group
Unrecognized modifier key token: scene.handle.hose.uniform
Unrecognized modifier key token: scene.handle.ikpivot.lock_click
Unrecognized modifier key token: scene.handle.isosegment.extend
Unrecognized modifier key token: scene.handle.pill.mirror
Unrecognized modifier key token: scene.handle.translate.inc_snap
Unrecognized modifier key token: scene.handle.slider.mode
Unrecognized modifier key token: scene.handle.motionpath.insert
Unrecognized modifier key token: scene.handle.motionpath.delete
Unrecognized modifier key token: scene.handle.motionpath.move_key
Unrecognized modifier key token: scene.handle.scale.inc_snap
Unrecognized modifier key token: scene.handle.mousewheelbump.slow
Unrecognized modifier key token: scene.handle.mousewheelbump.fast
Unrecognized modifier key token: scene.handle.mousewheelradius.slow
Unrecognized modifier key token: scene.state.brush.brush_radius
Unrecognized modifier key token: scene.state.brush.brush_radius_wheel_slow
Unrecognized modifier key token: scene.state.brush.stencil_clear
Unrecognized modifier key token: scene.state.capturelayerpaint.select
Unrecognized modifier key token: scene.state.edit.brush_radius
Unrecognized modifier key token: scene.state.edit.brush_radius_wheel_slow
Unrecognized modifier key token: scene.selector.join.flip_click
Unrecognized modifier key token: scene.state.stroke.cursor_radius
Unrecognized modifier key token: scene.state.stroke.cursor_radius_wheel_slow
Unrecognized modifier key token: scene.selector.uvpelt.hint_click
Unrecognized modifier key token: scene.state.bone_create.split
Unrecognized modifier key token: scene.state.bone_create.parent
Unrecognized modifier key token: scene.state.capture_weights.bone_toggle
ERROR: Couldn't open resource file “resources” (No such file or directory)
Can't open dophints.cmd
Could not initialize the help server:
Traceback (most recent call last):
File “<stdin>”, line 1, in <module>
ImportError: No module named houdinihelp

ERROR: Couldn't find ‘SI_ColorEditor.ui’ for reading. Looked in:
/home/masaharu/houdini17.0/GameDevToolset/17.0/1.102/config/Applications

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but I can boot houdini with this command as root.

bash /opt/hfs17.0/bin/hindie &

so try “run with administrative rights”.