Sometimes the compression process doesn't works => in the same directory you can have both "*.C 2" and *._A files.
Therefore you can't know which one caesar opens: the *.C 2 or the *._A???

=> go to Config / Miscellaneous options / Compress Caesar Files = FALSE

Other bugs due to *.C 2:
- lost of *.C2DB file (lines numbers)
- impossible to import load cases from a compressed file *.C 2