Problems with VCS connection

After switching over to a new source code repository (subversion), I started getting the "Problems with VCS connection" error. I'm not sure what the problem is. When I go to edit the VCS root, I notice the message "This VCS root is used in more than one build  configuration. Please choose corresponding option for applying changes in this  VCS root." After I set that to "Apply to all configurations of AIS project" everything seems to be working for about 30 seconds, but then the error comes back and I get the same warning message about the VCS root as if I had never set the option. Here's the details of the "Problems" error:

java.lang.NullPointerException
at  jetbrains.buildServer.buildTriggers.vcs.svn.SvnConnection.createStringRevision(SvnConnection.java:244) 
at  jetbrains.buildServer.buildTriggers.vcs.svn.SvnConnection.addChanges(SvnConnection.java:227) 
at  jetbrains.buildServer.buildTriggers.vcs.svn.SvnSupport.collectBuildChanges(SvnSupport.java:287) 
at  jetbrains.buildServer.vcs.VcsSupportUtil.collectBuildChanges(VcsSupportUtil.java:37) 
at  jetbrains.buildServer.buildTriggers.vcs.svn.SvnSupport.collectBuildChanges(SvnSupport.java:199) 
at  jetbrains.buildServer.buildTriggers.vcs.VcsChangesLoader.collectBuildChanges(VcsChangesLoader.java:37) 
at  jetbrains.buildServer.buildTriggers.vcs.VcsChangesLoader.loadChanges(VcsChangesLoader.java:164) 
at  jetbrains.buildServer.vcs.impl.VcsManagerImpl.loadChanges(VcsManagerImpl.java:169) 
at  jetbrains.buildServer.serverSide.impl.auth.SecuredVcsManager.loadChanges(SecuredVcsManager.java:61) 
at  jetbrains.buildServer.serverSide.impl.VcsModificationChecker$1.run(VcsModificationChecker.java:11) 
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417) 
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at  java.util.concurrent.FutureTask.run(FutureTask.java:123)
at  java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650) 
at  java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) 
at java.lang.Thread.run(Thread.java:595)

And ideas?

-Aaron