Acces to sandbox/trash creates endless loop - LdapUserMapping -> called isGroup(ProjectContributor)

I use an Active Directory for authentication. When I try to access the sandbox or trash I'm in an endless loop:

mod_fcgid: stderr: - LdapUserMapping - called isGroup (ProjectContributor), referer: http:// ...
and so on ...

It ends with:

mod_fcgid: error reading data, FastCGI server closed connection

The same thing happens when I try to add "ProjectContributor" to a group. What is the problem?

-- JensHartkopf - 29 Aug 2014

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