Rotmg Testing Editor Help?

I've seen how when other rotmg clients get un-usable due to patchs/updates so im wondering if its possible for someone to fix the rotmg testing editor so you can play with it again :L? i never heard about it so i wasn't able to try it out so i'd be very greatful if someone could try and fix it or post what would need to be done to fix it..


Testing Editor:

http://www.mpgh.net/forum/attachment...h_mpgh.net.rar

What is this?