hooktest.lua hangs the cam attached romlog
I'm not sure the romlog is related. The crash it shows happened ~1.2 seconds after camera start. It's an "undefined instruction" exception, the addresses (PC, LR and most of what's on stack) could be inside a module, not sure why.
"Undefined instruction" could be caused by incorrect thumb state, division by zero or due to executing garbage.
capt_seq.c seems full of reyalp's debug code, you could try using it (you need to access the syslog for those debug messages).