I was thinking the other day that we need to redirect from that page to the assembla site or at least have a copy of 1.8.0 there and the installer for 1.8.0. I am not sure if I have permission for that or not.
==============================================================
OK anyway the problem is simply that we don't use the source forge site for the most recent stuff.
Haven't for years.
Try going to this page and getting a more up to date version:
http://www.rpgobjects.com/index.php?c=orpg&m=getorpgPlus that page will give you an actual installer and install Python and wxPython if you don't already have them (both required for OpenRPG).
If you have any problems please mention them here.
Thank you.