id summary reporter owner description type status priority milestone component version resolution keywords cc 2945 Translation error Adam Dershowitz Willi Braun "I just upgraded from 22978 to 23108. Some of my models, that worked fine in 22978, now report the following errors: [:0:0-0:0] Error: Internal error BackendDAEOptimize.createJacobian failed [:0:0-0:0] Error: Internal error BackendDAEOptimize.generateSymbolicJacobian failed But, the models then seem to compile and run fine. So, I'm not sure if this is a ""real"" error, or it is a bug in the Messaging system? But, something is clearly different after the update. Typically, after errors, the model then stops, so I am not sure exactly what to make of the change, and the errors. " defect closed high Future Backend trunk fixed