I'm getting a fairly regular crash following a Check for Updates when focus is then moved to the Library search box.
To replicate: Run Check for Updates. If no downloads are found or if updates are processed, click OK at "Modules are all up to date." Close Check for Updates window. Click Library search box.
I don't crash 100% of the time, but it is pretty regular. I can't tell if it matters where focus was upon initiating Check for Updates.