Better to find reason for crash and fix it. Or in theory could have some other program that checks if the insim-tool is still running and restart when nessecary..but depends on what Os and language is used.
Haha 98 developer It's made my day! I can't find reason for crash, because i don't see reason for crashing.. Maybe it crash because LFS Extrenal is very unstable... I use LFS Extrenal 1.1.1.7 now will try with 1.1.1.5