Manual CHM

Hi, I have a problem with download of the manual chm.
I download it and if I open it I can’t see any pages .
Do you have my same problem??
Thanks

Both are fine, and can be opened on Windows and Linux.

Either manuals work for you (html and chm)??

Are you running Windows? You might find your answer in this thread:
discourse.panda3d.org/viewtopic.php?t=5148