Originally posted by: modeling

Hi all, 

When I run my OPL run configuration I got the attached error screen (01_error.pg) while reporting the solution. Then, I can not launch my project as shown in (02_error.png). I found a temporary solution for this : go to .oplproject "IBM ILOG OPL IDE Project File" and remove the problematic run configuration's definitions as shown in .oplproject.png and re-create the run configuration. However, after one more run this method also fails. And I have to use previous version of the entire project. Can you help me to resolve this error ? 

Many thanks. 

Originally posted by: FredericDelhoume

This error is a Java internal error, for example see : http://stackoverflow.com/questions/11441666/java-error-comparison-method-violates-its-general-contract

Unless we have your model or a subset that reproduce the error it may be hard to know what happens and when.

Originally posted by: FredericDelhoume

It may also help to see the .log file in your workspace

Originally posted by: modeling

Many thanks Frederic, 

Please find the log file in the attachemnt. it is very similar to the Java error you sent. It seems, the problem is about IloOplOutputFile Class. BEcause when I remove some of them in my code I get rid of the error. 

Best regards.