id summary reporter owner description type status priority milestone component version resolution keywords cc 174 ProSim Plus crashes with error interfaces automatic calls michelpons Michael Halloran I am using ProSim Plus 3.3.13.0 together with Aspen Properties v8.0. It is a simple flash but on a mixture containing ions. I am enabling COLTT on Aspen Properties Thermo System and I am running the flowsheet made of a single unit operation, a TP flash. When the box is ticked about error interfaces automatically called when errors are raised, ProSim Plus crashes. When I am simply enabling COLTT and no other options, the run goes to its end nicely. I am using COLTT 2.1 Build 280. My guess is that the description of the last error is a bit too long for COLTT to handle it, but it is just a guess. defect closed major 2.2 COLoggers Development fixed Errors michaelhalloran