Firmware updat for K8204

hey everybody, one hour ago i installed the new K8204 upgrade and the Z axis works very good, but since the firmware update, non of my Y or X motors work, how can i change this?

Did you use Arduino 1.0.6? Newer versions can’t upload the Marlin V2 correctly.

You can download it from here
http://arduino.cc/download.php?f=/arduino-1.0.6-windows.exe

thank you, it worked! why doesn’t 1.6 work?

It must be a library issue.
The libraries that come with the Arduino IDE changed between versions.
I read somewhere, that the newest Marlin (from GitHub) now also works with the newer IDE.
But i have’nt tested that by now, because you’d have to make all config changes for the Velleman again with that.

cheers,

Christian