I have just had an issue with this bug.
It was annoying I tried everything listed on this page to try to fix it to no avail. I gave up and thought I would have to wait two days for it to resolve itself but had just updated everything so restarted my pc, tried Opera again and, hey presto, it was working again.
This bug is such a pain as I save all my passwords in Opera as I have too many to remember, this has learned me a valuable lesson, I now no longer rely soley on Opera to remember my sites and passwords.
This crash happened on 18/07/2015
Opera Version 30.0.1835.125 (stable)
Windows 8.1 64-bit