Reference/Release Notes/2.64/Bug Fixes

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Blender 2.64: Bug Fixes

Changes from r45990 up to r50994

3D View


  • Fix: actions being tweaked in NLA Editor were not being played back if the track that they belonged to was currently being played back "solo" (Template:Commit)
  • Fix: Graph Editor - View All/Selected now includes handles for calculating extents of F-Curves (Template:Commit)



  • Adding a split files option to the mixdown operator which then renders each channel into a separate file (Template:Commit)



  • Fix issue with resetting active nurb when sawing from edit mode (Template:Commit)


File I/O

Game Engine

Image / UV Editing

Mesh Editing

  • Fix geometry to origin in mesh editmode (Template:Commit)
  • Fix for select flushing in UV-sync-selection mode, both border select and circle select failed in edge and vertex mode (Template:Commit)


Motion Tracking

Nodes / Compositor


  • Fix issue with linked dupli objects not being displayed in the viewport, if they have no object bounding box (Template:Commit)


  • smoke fix: wrong maximum timestep, resulting in exploding/unstable fluids (Template:Commit)
  • smoke fix: scaling issues which happen with non cube-shaped domains (Template:Commit)
  • cloth fix: didn't support animated vertex groups like the "Vertex Weight" modifier (Template:Commit)
  • cloth fix: Cloth did not work with Dynamic Paint (Template:Commit)


  • Fix bug in mathutils.geometry.intersect_point_line() where 4D vectors were treated as 2D (Template:Commit)
  • Fix for negative stop values when slicing was broken (Template:Commit)
  • Fix for crash when 'Register' scripts load blend files (Template:Commit)


Render: Cycles

  • Fix T31202: cycles crash in new BVH builder on Windows, when compiling with debug info. (Template:Commit)
  • Fix T31168: cycles mask layer should only affect objects for camera rays. Fix: texture coordinate normal output was not correct, still changed under object transform. (Template:Commit)
  • Fix T31112: cycles not working well with vertex/weight paint selection mask drawing. (Template:Commit)
  • Fix T31054: cycles viewport rendering not working with CUDA for computation and ATI card for OpenGL (Template:Commit)
  • Fix T31317: viewport render layer rendering now uses render visibility rather than viewport visibility, is more useful that way (Template:Commit)
  • Fix T31318: cycles preview missing update for other materials using same node group with certain operations. (Template:Commit)
  • Fix T31307: cycles panorama camera not working correct with speed vectors and window texture coordinates (Template:Commit)
  • Fix T31379: cycles not recognizing 16 bit tiff as float image. (Template:Commit)
  • Fix T31486: cycles texture coordinate reflection output has wrong direction. (Template:Commit)
  • Fix T31518: changing cycles exposure did unnecessary rerender in viewport (Template:Commit)
  • Fix T31556: cycles object info random value was not properly randomized for dupligroups. (Template:Commit)
  • Fix T31778: Blender crashes by opening an image and being in viewport 'Material' or 'Texture' mode (Template:Commit)
  • Fix T31920: switching from cycles to blender internal with 3d view in rendered draw mode did not draw the 3d view properly (Template:Commit)
  • Fix T31021: Render settings are not taken into account for curves (Template:Commit)
  • Fix T32205: Holdout shader + transparent background stays black with Alpha = 1 (Template:Commit)
  • Fix T32431: Cycles Math Node : Clamp does not work (Template:Commit)
  • Fix T32144: cycles viewport missing update with dupliverts (Template:Commit)
  • Fix T32097: cycles window texture coordinate wrong (Template:Commit)
  • Fix T32415: tighten up cycles opencl initialization checks to try to avoid crashes (Template:Commit)
  • Fix T32031: particle distribution on degenerate faces could give NaN values, which in this case caused NaN values in render lighting (Template:Commit)
  • Fix T31888: cycles crashes using movie for image texture (Template:Commit)
  • Fix T32638: mesh double sided normals option not available in any Cycles panel (Template:Commit)
  • Fix T32667: Curve softbodies doesn't render animation (Template:Commit)
  • Fix T32670: lamps in lamp groups did not respect renderability option (Template:Commit)
  • Fix T32618: cycles multithreaded image loading could crash with CUDA, was a threading issue that happens once every X frames (Template:Commit)
  • Fix T32072: cycles shadow pass gave different results with/without emitting materials present, even though it's only taking lamp shadows into account (Template:Commit)
  • Fix T32725: Cycles border render + panorama camera not working in viewport (Template:Commit)
  • Fix issues with texture coordinates and object scale. Auto texture space size and location were outdated often, and already computed on demand by blender internal, now do that through RNA as well (Template:Commit)
  • Fix cycles continuously updating when creating a driver for a scene property, like driving integrator seed with #frame (Template:Commit)
  • Fix cycles panorama camera not working with depth of field (Template:Commit)


Sculpting / Painting

  • Fixes for weight paint mode: sample weight didnt work when the object was transformed; sample weight didn't work when vertex selection was enabled; 'All faces' option is used by weight paint mode, but there was no UI access (Template:Commit)

User Interface

  • User Preferences / Themes * Tooltip section was there twice (Template:Commit)
  • Fixed UI bug in distance, chroma, and difference nodes that caused the threshold to be limited by the falloff value (Template:Commit)


  • Fix word selection in the Text Editor to deal with multibyte characters (Template:Commit)
  • Fix crash doing alt+A playback in files saved in version <= 2.34 (Template:Commit)

Fixes since 2.64 (for bugfix release)

  • Color management: fallback to stub ocio implementation in cases when ocio configuration file failed to load - (Template:Commit, Template:Commit, Template:Commit, Template:Commit, Template:Commit)
  • Color Management: fixed loading configuration from non-ascii paths (Template:Commit)
  • Fix render engine API compatibility breakage in end_result, this parameter should have been optional (Template:Commit)
  • Booleans: epsilon for planar checks seems a bit too small for single precision math (Template:Commit)
  • Fix for circle select ignoring lock selection option for pose and edit modes, added macros PBONE_SELECTABLE, EBONE_SELECTABLE (Template:Commit)
  • Toggle cut through in the knife tool now refreshes (before you had to wave the mouse about to see the result) (Template:Commit)
  • Fix reading past array bounds for nearest_uv_between() and draw_tracking_tracks() (Template:Commit)
  • Fix writing past array bounds in imagewraposa(). Also correct array sizes in othere areas (Template:Commit)
  • Fix for logical errors: range check on hair_velocity_smoothing() was off by one; cloth sim parm's are used before NULL check in readfile.c (Template:Commit)
  • Typo fix: Tooltip for "Offset Factor" for FollowPath constraint referred to "bone" instead of "curve" (Template:Commit)
  • Fix file descriptor leak in BLI_file_ungzip_to_mem and small memleak in wm_window_title (Template:Commit)
  • Fix for crash in the sequencer if the video file fails to load (missing NULL check on imbuf) (Template:Commit)
  • Fix for zoom-to-mouse which was broken since view2d drag zoom refactoring (Template:Commit)
  • OSX zoom pinch was using inverted direction (Template:Commit)


  • Screencast Keys Addon: make the ticker slower to not eat CPUs (r3809)
  • Remove sticky coordinates use from 3ds import/export (r3834)