In the web interface to the Build Service I am not able anymore to edit spec files or set successful builds to be published. If I try I get the message:

ERROR Your flag configuration seems to be too complex to be saved through this interface. Please use OSC.

I am not aware that I have changed any "flag configuration". Indeed I did not even edit my configuration for some weeks, so I wonder if there is a time out for the web interface?

What have I to do to get back working?