thank you for your reply. I attach a screen shot of the error message and one C01 file for you to test. I am using the 2.2.0 version on a brand new iMac (MacOS Sierra 10.12.3). Previously, the old CP1 was able to handle the C01 files. I am not sure exaclty which version it was but I think the last one before the 2.0.
My colleague here at the University of helsinki is telling me that in the windows machines the CP2.2.0 can handle the C01 files just fine.
Hope this helps, I really would need to use CP again