Drawing missing z-axis [uArm Swift Pro]

When trying to draw, everything looks good until the zero level has been set, the Start button pressed and the drawing is supposed to be executed. Then the uArm quickly jerks itself up, and overdraws its boundaries to the sound of cogs jerking themselves out of place). After this, the drawing starts, but the uArm has lost all sense of Z plane, and moves the pen upwards on the positive z axis seemingly in the same relation as to the distance from the base. Obviously not hitting the paper.

The same cogs hacking from overstepping boundaries also happens everytime one switch modes in the studio. I suppose that is not the way it is supposed to be either.

Looking forward to a resolution.

Oh, and would have made a bug report via the uArmSturdio, but trying to do so gives me a popup with an error;

A JavaScript error occurred in the main process

Uncaught Exception:
TypeError: Error processing argument at index 0, conversion failure from undefined
at click (C:\Program Files\uArmStudio\resources\app.asar\dist\main.js:1:23728)
at MenuItem.click (C:\Program Files\uArmStudio\resources\electron.asar\browser\api\menu-itme.js:52:9)
at Function.executeCommand (C:\Program Files\uArmStudio\resources\electron.asar\browser\api\menu.js:121:15)


uArm Serial No.: 05051700C4
Firmware Version: 3.1.5
Operation System: Win7
uArm Controlling Method: uArmStudio 1.0.50

uArm User Facebook Group
Contact Us:
English Channel