Lightroom 5.4 crashes when attempting to go to the Preferences. Today I updated to 5.5 but have the same problem. As soon as I click on Edit > Preferences the program stops working.
Windows 7/ 64; 32GB RAM
It sounds like your Preferences file is corrupt. You can try trashing the old one so that LR is forced to re-create it:
Resetting (or 'Trashing') the Lightroom Preferences file - Lightroom Forums
Thanks for trying to help but that was the first thing I tried and it didn't help...
Retrieving data ...