Thank you for all the suggestions. I have now found a workaround that seems to be working, although the actual error still persists. Under Run Calculation --> Data quantities I was able to select the entire range of variables to be exported in a .dat file and subsequently read this in CFX. However, the export of a .cdat file still gives me problems.

- The monitoring points and internal interfaces do not seem to be the problem since I removed them in a test case and got stuck with the same error

- The UDF I'm using also seems to be fine, as well as the naming of regions and monitors, since I got the same error by removing them.

Could this be related to the fact that I'm running a 2D case in Fluent and CFX/CFD Post do not support 2D?


Thank you again for your support and assistance!