The attached scene has reliable crashed the CLI client three times, always at the same position (1:59 into rendering on this iMac).
I have no idea what causes it, I'm trying a GUI render now to see if it produces any debug output. If it does, I'll attach that.
The crash causes no output on stdout. I didn't redirect stderr to anything, so I'm not sure if it wrote anything there. Actual commandline was:
nohup tgdcli -p Alpine5-N.tgd -exit -r -o Alpine5-N.exr &
The last lines in nohup.out:
Rendering final pass... 1:58:00s, 3874806 micro-triangles
Rendering final pass... 1:58:30s, 3874806 micro-triangles
Rendering final pass... 1:59:00s, 3874806 micro-triangles
Rendering final pass... 1:59:30s, 3874806 micro-triangles
and then it just stops.