The following are reproduction steps for a 2.72(a) crash on unwrap of highly subdivided mesh. This behavior was found in Windows and Ubuntu Linux.
- Open Blender
- Delete default cube
- Add Mesh –Plane
- Press S to Scale Plane, and type 10 as scaling factor
- Tab to Edit mode
- Subdivide Plane, number of cuts: 1000
- Press U and select Unwrap
After processing the Unwrap command for a while Blender quits with the following error on the Console:
Can't expand MemType 0: jcol 1210311
Blender 2.71 (blender-2.71-windows64, Hash 9337574) can consistently complete the repro steps above without problem. Blender 2.72 fails consistently with the error above. Blender on Ubuntu exhibits this behavior as confirmed by another user, more information here:
1000 cuts is obviously large and it takes a while to create those ~1M faces and then awhile to unwrap the mesh. I have a decent amount of hardware and thus I don't believe it's a hardware thing.
My system specs are found here: http://stirlinggoetz.blogspot.com/2014/01/building-ultimate-cgivfx-workstation.html