Hi,
I've had a problem where a repository that has always worked started to crash svnX 2.0 when being opened.
Trying to purge the cache crashed svnX 2.0 too.
Nothing else has changed, another repo in the same server continued to work just fine.
Creating a new bookmark for the crashing repo would immediately cause a crash too.
The solution for me has been to create a new bookmark for another working repo on the server. Then connecting to it. Then changing the bookmark to point to the problematic repo. Then purging cache.
At the end of this, working repo!
Might help someone else.
Cheers,
Carlo