Ok, now it seems something odd is happening on 0.6 (which didn't occur on 0.5):
After loading an autosaved game, playing through a level, upgrading the ship and starting the next level I get a BSOD with following information:
Exception - Bus error (data)
EPC - 08939FA4
Cause - 1000001C
Status - 60008613
BadVAddr - 00144000
identify offending routine with:
psp-addr2line -e target.elf -f -C 0x8939fa4 0x144000 0x8939d90
This didnt happen in 0.5 for me.