I reinstalled cplex after some time and tried to run a simple script.
This error keeps appearing and I don't understand why, it doesn't matter what I write in the code of the script, Ilog cplex ide can't seem to find the project folder. Other than the reinstallation I did not make any other use of it.
Project is the name of the OPL project folder.
What you should do is delete the project from within the IDE and then reimport the project in the IDE.