I also had a similar Proxy Dll error. I couldn´t find any solution and i was lokking in all forums and getting crazy. At last i found the solution, and i realized that when descompress the zip file i hadnt activated "use folder names". So, when descompress the zip file, be sure that in OFp folder u have a "d3d8.dll" archive and a folder named "dxdll" (this folder must contain 2 foldersmore (screenshots and textures) and 2 archives (configurator.exe and config.cfg).
I hope this could be ur solution.