There is file name processing in CAESAR II, if you have something as "xyz.abc", because ".a" is input file extension name, so this string will not be processed properly as you may think. I have seen many users type dot, space, dash, etc., they are all working fine. There may be some restrictions, such as length, on file name as posed by Personal Isogen DLLs, which I am not very clear and certainly needs to be careful with.

Regards,

Shawn Zhong
CADWorx & Analysis Solutions
Intergraph Process, Power, & Marine