Here are some of the errors you may encounter in the Control Panel.
Bad Referrer
This means the URL control panel location does not match the $site variable in the generator.cgi file. The $site variable is an extra security precaution that can be used to make sure that all control panel changes must come from an exact location. Normally, you will set the site variable to match the URL location of your control panel.
http://yoursite.com/cgi-bin/wonderdesk/secure/controlpanel.cgi
Form Incomplete
This means you did not fill in some critical information that is required.
Internal Server Error
This generally has to do with the actual installation.
If on Unix/Linux web server, make sure you uploaded the WonderDesk files (except for the images) in ASCII mode, not Auto or Binary mode.
If on Unix/Linux web server, make sure you have the proper CHMOD permissions set on each file. For example, controlpanel.cgi needs to have a 755 permission.
If on NT, make sure you edit all 4 .cgi files and define the path variable.