The debug log would be of a great help for us as there're many possible reasons for this kind of failure. You can find the log files at $STASH_HOME/log/ directory. Please send these logs to email@example.com or create an issue at our tracker http://issues.tmatesoft.com/issues/SG and attach the logs to it.
As a quick workaround you can try to enable the plugin manually via Administration | Manage Add-ons | SVN Mirror For Atlassian Stash | Enable.
Sorry guys, I didn't get any notification when either one of you responded. I couldn't paste the log here since it was too big, so I created an issue and attached the log at http://issues.tmatesoft.com/issues/SG per Semyon's suggestion.
The issue is at: http://issues.tmatesoft.com/issue/SVNKIT-399
I moved your issue to another project at our tracker: http://issues.tmatesoft.com/issue/SG-45
So far it looks like someone has upgraded UPM before installing the plugin and that broke some dependencies. Please try to install the latest version of the plugin. Please let us know whether that fixes the problem for you.
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs