[rules-users] Error on Build Package Click

I got the following error when I tryed to build the default sample repository after starting guvnor the first time. I then tried to build my own package, and got the same error: 400 Sorry, a technical error occurred. Please contact a system administrator. Service method 'public abstract org.drools.guvnor.client.rpc.BuilderResult org.drools.guvnor.client.rpc.PackageService.buildPackage (java.lang.String,boolean,java.lang.String,java.lang.String,java.lang.String,boolean,java.lang.String, java.lang.String,boolean,java.lang.String) throws com.google.gwt.user.client.rpc.SerializationException' threw an unexpected exception: [Error: illegal escape sequence: .] [Near : {... ".aaaa.bbbb.\.[1-4]" ....}] ^ [Line: 1, Column: 22] [Error: illegal escape sequence: .] [Near : {... ".oooo.ppp\.[1-4]" ....}] ^ [Line: 1, Column: 22] Please Suggest Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Error-on-Build-Package-Click-tp4018712.... Sent from the Drools: User forum mailing list archive at Nabble.com.