This issue is from corrupted CBCL 1.5-5 or TRF 6-18 files.
If you are seeing this error, first, run a repair of the program. This can be done by entering the CD back into the computer and running the "setup.exe" file. When prompted please choose "repair".
If this does not work for you, please find ALL CBCL 1.5-5 and TRF 6-18 forms, and select key entry. If age and gender are not filled out, please fill them out then save the forms. This should solve your issue, if it does not please send us an email.