What's ICE Compiler by the way?
But seriously, yeah I suspect he did something wrong. Also remember: Always back up your progress often when testing ICE code. It's not like TI-BASIC. TI-BASIC will give an error if the code is wrong. ICE, ASM, C and most BASIC add-in libs will delete your RAM content. Heck, even pure TI-BASIC can delete your RAM apparently if you trigger a TI-OS bug. Always keep your data safe.