After adding a role with the the regular expression: Project.(?<!Release).
I cannot add any other role or change the already added ones and I get the fallowing error:

type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: net.sf.json.JSONException: JSONObject["pattern"] not found.

I attached the complete error log.
Thanks in advance for your help.