RotMG Mule Creator (Fast + Secure)

A bit late but whenever I try to use it I get an unhandled exception. (The remote server returned an error: 500 internal server error) I used it once time to make 16 and it worked great. But it doesnt seem to work now

I dont get it i try to make 10 mules then it makes a lot of errors i cant make a mule

i dont play this anymore, but let me go check if its outdated and get back to you.

Edit: seems like it still works for me (i tested on win 7 x64 sp1).
please specify which error you get and when. also, which OS are you on?