I installed xmailer using the OPM and have been trying to get the class demo included in the installation working. The demo program uses two units: xmailer and sysutils. I can compile the demo program, but can't step into the xmailer unit using the F7 key to debug the program. Can anybody give me some guidance on how to fix this? I suspect it's something to do with project options, but haven't been able to find the solultion.