This internal error message is generated if QuarkXPress cannot insert a blank page at the front of the output file of the current diary generation.
This internal error could be due to an overly aggressive anti-virus, or to Windows being almost out-of-resources. You should try to re-boot your computer. Also make sure that you are using the latest version of Q++Studio and the minimum recommended build of QuarkXPress, as this error could come from a bug which has since been fixed.
If the problem remains, please send the script to technical support.