Repetier Host 90c doens't work with R2C2 (1 reply)

I was very happy with my R2C2 Electornis and Repetier Host 90b. After an update to 90c it stops working. I can still connect but if i want to send something there are always "instruction waiting". On German " Befehle warten" and there is no reaction at my MendelMax.
Where can i get a 90b working Version ?

R2C2 Firmware is a Teacup Fork.

Thank you