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MotionBuilder 2025 Release Notes

Welcome to MotionBuilder 2025. These release notes describe known limitations, issues, and fixes included in this release. To learn about the new features and updated workflows, see What's New in MotionBuilder 2025 and What's New in MotionBuilder 2025 SDK.

For complete MotionBuilder configuration, licensing and deployment options, see MotionBuilder Installation.

What's Fixed

General
Scale Compensate is not respected on child object MOBU-11919
Shortcut keys no longer received after plotting the animation to a skeleton MOBU-11940
Time discrepancies between shot clips UI and internal value MOBU-11831
Ruler is incorrectly snapping to the center of objects MOBU-11974
Loop playback through all takes doesn't work if play speed is ALL FR MOBU-11958
Larger numbers are cropped and displayed as "+" and "-" MOBU-11962
Viewer turns gray when using drag & drop MOBU-11995
VSync on Linux is always forced on MOBU-11986
Camera view and FCurves view become inactive after UI selection MOBU-11959
Character
IK Pull no longer works with MB Character Solver MOBU-11981
FBPlotOptions is ignored when calling FBCharacter.PlotAnimation() MOBU-11922
Off/Auto/User numerical properties are reverted to previous value when in Auto mode MOBU-11979
Constraints
Translating constraint object in local space behaves wrongly MOBU-11988
FCurves
Crash on startup once the FCurve color of a property has been set of all curves of this type MOBU-11994
Keys scaling in FCurve is not affecting tangents MOBU-11829
File I/O
Crash when loading a file with LayerElementColor parts MOBU-11992
Merging a file changes the current take start/end frames MOBU-11963
MotionBuilder always creates a fbm folder when fbx file is opened MOBU-11849
C3d crash when changing the current time to a large number MOBU-11984
Crash with Optical data scene MOBU-11990
Namespaces
Crash on load/save when using a long namespace name MOBU-11987
Python Editor
Python outputs are not always printed in the Python Editor/Status bar MOBU-11889
Render
Unable to render under a path containing non-ASCII characters MOBU-12008
Pressing Esc key will cancel rendering even if MotionBuilder is not the active window MOBU-11973
CgFX shaders produce error messages on file load MOBU-11953
Schematic
"Arrange All > Vertical" places the children diagonally MOBU-11841
Story
Insert Current Take sometimes introduces Euler flips MOBU-11993
Selecting and moving character reference affects story clips MOBU-11954
Keying a skeleton bone doesn't always key the correct values within a writable story clip MOBU-11952
Inconsistent plot of custom attributes from Story Tool MOBU-11888
Camera focal length keys not always saved in writable clips MOBU-11832
Takes
Potential crash when bringing up the Takes/Poses contextual menu MOBU-11991
Video
Freeze when loading a scene with QuickTime component missing on system MOBU-11950
Video output window is constantly flickering when enabled MOBU-11819
SDK
Linux Crash when destructing certain objects MOBU-11985
Buffer overflow in FBMessageBox API MOBU-11972
FBModel.FBDelete() gives an unexpected behavior on non-deletable models MOBU-11971
FBGetSelectedModels incorrectly returns FBHandle MOBU-11966
FBBox:AnimationNodeNotify method is executed even if constraint is inactive MOBU-11948
FBTool.SetPossibleDockPosition usage is wrong in the ormotionbuilder_shelf sample MOBU-11848
FBRenderer.FrameCurrentCameraWithModels not working with the Schematic MOBU-11844
FBCharacter.SetFKVisibility doesn't toggle the FK controls visibility in the Viewer MOBU-11843
FBPopup.Show() does not return a value MOBU-12009
Getting name-based properties returns an error with names containing characters that fail to encode as UTF-8 MOBU-11980
PyOpenGL library doesn't support Python 3 MOBU-11914
Python vector Distance function is not working as designed. MOBU-11820
FBApplication.FileImportWithOptions overrides the takes already in the scene MOBU-12017

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