I am having the exact same problem. I am running Fedora Core 3, 2.6.9.
I installed the packages in the order listed on the sourceforge pptpconfig site:
The problem (so far as I can tell) is one of the packages above (maybe php-gtk-pcntl) was compiled without support for something called Scintilla, and pptpconfig needs this to run. I tried installing scintilla-gtk using rpm and reinstalling all of the above rpms, but no luck. Scintilla appears to be a text editor, so I don't know why pptpconfig would need it. I read that you can build php-gtk-pcntl without scintilla support to fix the problem, but I can't find src rpms for it, only the binary.
3 hours wasted on this problem so far. I'm thinking about just going back to Windows. I could setup a pptp vpn connection in XP in 2 minutes
Can any pros out there help?
Thanks in advance.