Quote Originally Posted by Roxy View Post
OK. First thing to do is go get the current RCBugFix: https://github.com/MarlinFirmware/Marlin/tree/RCBugFix

Bring this up and report back if things are not working well for you. There are a huge number of improvements and most likely your issue has been addressed in the new code base.
First of all sorry for the long absence. It just updated the firmware to the latest RCBugFix according to your solution, but now there is something really messed up with autobed leveling.

What I did:
1. Connect to the printer via Repetier
2. Run G28 (works well)
3. Lower Z a bit, so you can see the effect of G29 better
4. Run G29 ------> https://www.youtube.com/watch?v=Hwx1jiNZYuA (wtf ?!)

Here are my configurations (old [Marlin 1.0.0] and new[latest RCBugfix] ): http://www.filedropper.com/configurations
(PS: attachments in this message board are not working!)

I would really appreciate some help