Problem I need help about ultimaker 2, printer change reference and lost piece

[TomRod 0]

Dears:

I have a problem. I have a ultimaker 2 printer and when print pieces this start very good, but after about two hours (it is random), the machine continuous printing in another reference, losing the piece. I have Cura 15.04.6 an d the firmware was updated. I appreciate if you could help me.

[peggyb 139]

Here is a lot of visual information that might help you:

http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide#shifted