Shaffy
I can do that myself, but if you're reading this and would like to participate, please reply to this issue so I can contact you ASAP!
Extreamely weird quirk, my speculation is that the English test is simply too big and overwrite some important memory addresses on the RAM. More spedifically it crashes the staff credits,...
The Rhythm Heaven Wikia has better translation of that.
It says Rhythm Library (to check), but E-Mail will be just fine.