The last days I got a few times this error :
This time, I just started SQL Nav, opened a script and closed it -> crash.
The error log contains a lot of lines with the same error :
v7.2.0 2015-01-26 08:22:34 Access violation at address 01D9E676 in module 'sqlnavigator.exe'. Read of address 000001C4
I'll send the support bundle files to Michael's mail.