Broken repository + error based on repo name

Background:

I run VisualSVN on a windows server.

Problem:

I started getting errors on my nightly SVN hotcopy (svnadmin: E200002: Serialized hash missing terminator). I tried unsuccessfully to determine the source of the error and SVNADMIN VERIFY/RECOVER were returning no errors so I decided to try a dump & load.

This seemed to work successfully but when I renamed the test repository to the same name as the old one I got the error 'Corrupt node-revision'. I tried not loading the last few revisions (i.e. dumped until a few earlier) and I still get the same problem. When I rename it back to another name the problem stops. See follow-up - I'm not sure why but re-installing a new version of VisualSVN fixed the naming problem; I'm still unsure what caused it.

The questions I am hoping to have answered are:

What was likely to cause the original error?
Why would the name of a repo impact it's viability? (This may be VisualSVN cache thing - is it possible to fix it so I don't have to switch all the users working copies?)
Can I do anything to stop either issue happening in the future?

Follow up: After deciding the name change was almost certainly some issue with VisualSVN I uninstalled the version I was running (2.6.5) and moved to the current version (2.7.3). I pointed it to the same repositories folder and after installation everything worked! I'm not sure if re-installing the same version would have fixed the issue but as I haven't put too much time into configuring VisualSVN (since I originally migrated the repositories in) I didn't have much to lose..

Solution

I experienced the same issue in VisualSVN 3.2.2. While re-installing the application would solve the problem, I was able to solve the problem by restarting the VisualSVN Server service.

I've submitted a bug report to VisualSVN (they don't appear to have a public issue tracker).