HOME problem - UCCNC and STEPCRAFT2-420

Hi all!
I have encountered a problem that drives me nuts and I hope somebody will be able to help me sort the problem out.
My machine is a STEPCRAFT2-420 controlled by UCCNC and a UC100-interface. Previosly this has been working fine with an older version of UCCNC, which I no longer have. Following a computer crash I had to reinstall all software. I used the Stepcraft_Multi_Installer.exe file and installed UCCNC v1.2037 and the STEPCRAFT2_MODEL420 profile.

Now to my problem:
When I jog the gantry it seems to move in the correct direction (as seen from the front with the emergency bottom pointing towards me)
Pressing X- causes the gantry to move towards left
Pressing Y- causes the gantry to move forwards (tovards the emergency stop button)
Pressing Z- causes the gantry to move downwards towards the table

However, when I press the "HOME" buttons the gantry does not move towards the reference position (backwards, to the left and up) but rather the opposite (forwards, to the right and down). The movement does not stop by itself. I have to hit the EMERGENCY stop. What is wrong?

The machine coordinates with the gantry in the reference position is (x,y,z)=(-14,-7,+85) and when I move the gantry all the way to the front, to the right and down the machine coordinates are approx. (x,y,z)=(+273,-372,-110)

Any help is much appreciated. For your reference I enclose screen shots for the x, y, and z setups

Regards,
Michael