I love you guys. I really did mean "warning" rather than "error", sorry about that. My use of warnings is religious so I know what causes them too. I tried the common methods of turning them off in the block where start_html occurs but that didn't work. There were no empty variables since start_html was called with a few hard coded parameters. This occured under the PerlRun handler in the initial phases of porting old code to Registry and handlers. One aspect of our procedure replaces CGI with Apache::Request so we'll remove CGI HTML routines to solve this problem.

Just wondering if anyone knew about this because it took some time to find the problem and the source was so unexpected.