Responsive Help (HTML5) output file formats: Lowercase option?

Hello all,

I noticed that WebHelp has an option to convert filenames to lowercase when generating output. Does anyone know if it's possible to do this for Responsive Help (HTML5)? Apparently, our mixed-case filenames are causing problems on a Tomcat server.

I'm on running RoboHelp 2015 (12.0.3.428) on Windows 7, and using imported FrameMaker source files.

Thanks,

Kate