Hi,
When using friendlyfilenames no explicit interface methods are included in the chm-file builder process. This is because the filename of such a method is named like:
M_MyWebControl_System#Web#UI#IPostBackEventHandler#RaisePostBackEvent_1_72eac341.htm
I believe the CHM-builder process doesn't like the #-character in the filename referenced, so it thinks that the file isn't referenced and this causes the file not be compiled in the CHM-file. When using GUIDFilenames everything works just fine.
Kind regards,
Stephan Smetsers