Configuration interface crashes

After updating WP to v4.3 I can’t use the setup interface anymore, it crashes. Reinstalling did not help on, uninstalling all other plugins did not, either. No configuration possible at the moment, but plugin works in the frontend using former setup ( = configuration status before reinstalling).

Will there be an update?

THX!

https://wordpress.org/plugins/cryptx/