Finally I have got time to finish my upgrade from 1.0 to 2.0.
Everything was ready before the test run. When I wanted to get some fillament though the extruder - after some time this started happening: http://www.youtube.com/watch?v=470UHVp_ ... e=youtu.be
The stepper motor seems to clog and says this unhealthy sound - and keeps on doing this

What to do?
KR,
Markus