Configure Project loading overloay not hiding error "invalid gitTool selection Default"

Hello,

after upgrading to the newest GIT version and the latest Jenkins version i can't configure my projects anymore.

When i go to a project and press the configure button the overlay is not hiding and i cannot change any values.

The Log give me the following message:

invalid gitTool selection Default
Aug 19, 2013 10:33:17 AM WARNING hudson.plugins.git.GitTool$DescriptorImpl getInstallation

Perhaps anybody can help me with this problem. I tried to change the GIT path only to "git" but nothing happen. The projects at the moment are up and running. But i cannot configure it.