Brainapp/bugs and feature requests/tube add assertion failure

> $G/install_linux/bin/brainapp-gccx -f /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp/settings.cfg -f $G/src/brainapp/settings-desktop.cfg
Num args = 5
arg 0 = /map/gfx0/tools/linux/install_linux/bin/brainapp-gccx
arg 1 = -f
arg 2 = /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp/settings.cfg
arg 3 = -f
arg 4 = /map/gfx0/tools/linux/src/brainapp/settings-desktop.cfg
init ...
run ...
No ConfigVal mapping found for "LoadTextures".
Mouse FSA
Base Dir = /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/
Default Data Set = brainapp
Curr Dir = /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp/
Tube FileNm = /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//models/tube_12.wrl
Intensity Data Sets = /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//d2mem/I0/
Resolution: 220 220 126
Size: 1 1 1
Scale = 1
Key Rotate = 0.5
Size = 220 220 126
/map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//d2mem/I0/xform
Xform = 0 0 0
Midpoint : x = 110 y = 110 z = 63
Starting add tube

___________________________________________________
Assertion Failure
Debug assertion failure

Expression: N.isUnit() || N.isZero()
/map/gfx0/tools/linux/src/G3D/g3dcvs-707/G3D/G3D.lib/source/MeshAlg.cpp:137


Choose an option by number:
  (0) Debug
  (1) Ignore
  (2) Ignore Always
  (3) Exit

> 1
1
___________________________________________________
TubesObject::init memSize = 24322816
updated VARs   _varArea total 24322816 alloc 17042400 free 7280416
NUMBER OF TUBE MODELS = 10607
.info file exists, READING: /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//models/tube_12.info
INITIAL starting threshold: 0.110127
NO FA FILE
DONE ADDING TUBE
inside Statistics, if_FA is false!
ADDING VENT....
/map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//models/no file is an unsupported file type
DONE ADDING VENT...
ADDING SURFACE....
/map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//models/no file is an unsupported file type
DONE ADDING SURFACE...
NUM POLYS = 633204
Res: 220 220 126 1
Vsize: 1 1 1
MRI_IMAGE /map/gfx0/data/diffusion/st_louis/cognitive_aging.2008.07.20/tubes.2008.08.21/brainapp//d2mem/I0/
xry res 220 220 126
done with brainmri

coronal
Slice::create : v1 : x = 220 y = 220 z = 63
                v2 : x = 0 y = 220 z = 63
                v3 : x = 0 y = 0 z = 63
                v4 : x = 220 y = 0 z = 63

axial
Slice::create : v1 : x = 220 y = 110 z = 126
                v2 : x = 0 y = 110 z = 126
                v3 : x = 0 y = 110 z = 0
                v4 : x = 220 y = 110 z = 0

sagittal
Slice::create : v1 : x = 110 y = 0 z = 126
                v2 : x = 110 y = 0 z = 0
                v3 : x = 110 y = 220 z = 0
                v4 : x = 110 y = 220 z = 126

At this point the viewer window flashes and the tractogram appears.