Kris is aware of the problem and investigating a fix/workaround.
https://mobile.twitter.com/Appstafar...61053134258176
Of course, Kris has been mentioning upcoming releases of Gerty and/or Marvin for six months now then backtracks and becomes non-committal, so who knows?
Hopefully, he'll at least compile a 64-bit release before Apple removes all 32-bit apps for iOS 9.