[UM 2 Ext: air gap in prints - prints starts OK, but then the platform is lowered too much]

Standard firmware, version 15.04.02ex

Updated using Cura 15.06.03

[UM 2 Ext: air gap in prints - prints starts OK, but then the platform is lowered too much]

A little follow-up:

I updated the firmware to the lastest version (_15.04.02ex) and tried to print the elephant again (same gcode from same SD card). This time it came a lot further, but the same problem appeared.

[UM 2 Ext: air gap in prints - prints starts OK, but then the platform is lowered too much]

Hi forum!

I just got my Ultimaker 2 Extended and did some test prints and faced some problems...

I tried to print the "cup with lid" (https://www.youmagine.com/designs/cup-with-lid) with different print quality settings. At draft mode (0.2mm layer) and normal quality (0.1mm), it printed just fine. Then I tried the maximum quality settings (quality slider in cura basic mode to the right). The print started without problems, but after a third of the print a gap was produced and the extruder began to print in the air.

After that I tried to print the Elephant by FabShop with the print settings from this youtube video:

(Scaled up a bit, 0.2mm layer thickness, raft). The raft was printed correctly, but then the build platform lowered too much and it printed in the air again.

The UM stands steady on a solid table and there were no vibrations during the prints.

I'm using PLA (the silver filament came the UM).

I attached two photos.

Does somebody know whats wrong?