I checked your dll on internet pdcurses.dll, and it stands for public domain curses file. The problem is in when you start new gproxy, it can't start cause the file is missing, the solution is to include pdcurses.dll with exe file of gproxy that is a c++ program. So its not you, the ones who made new gproxy, made it bad. You can report the bug where you downloaded it.
I am not sure why you need this, but version from eurobattle.net works just fine, also don't forget to install .Net and c++ Redistributable.