Chakot,
What version of CAESAR II are you using?
Are you seeing any errors?
Is this happening for every file, even the Examples? The Examples can be found by selecting the examples button in the file open menu.
Please file a Service Request on Smart Support and upload your file. To do this either go to
https://smartsupport1.intergraph.com and select I am a new user and follow the process or send an email to your dealer/support channel. A full list can be found here
http://www.coade.com/Support/Dealers.shtml