Error when adding modules to pipeline

I started building my pipeline. Unfortunately, although it seemed CP was running smoothly, it didn’t save my project’s content. After I rebuild most of the pipeline, CP stopped working everytime I tried to add another module (mostly ExportToSpreadsheet or other Data Tools). Everything looks ok, and I can also open the modules section, but cannot select any modules anymore. Also, I can’t save anything.

I uninstalled Java, Java DK & CP, all newest version. I am on a Mac.
Hope you can help me!

Sorry you’re having issues. Someone else reported an issue with using the Data Tools in a pipeline, so perhaps you should avoid those for now. Apart from that, I don’t think we have enough information to offer any tips, other than starting from scratch which it sounds like you’ve tried! Maybe try it on a fresh computer?