Bob,
I've had the same in LV8.5 \w FPGA module. At startup, I'll get the option
to revert the project. If I do that, all fpga files need to be recompiled,
taking about 3 hours...
Seems to me that not all changes are stored in the project backup. So when a
crash happens, you get a (very) old version.
For now, I just never restore projects from a backup. The version stored on
disk always seems to be fine.
Regards,
Wiebe.