This one simply unsets and modifies some environment variables before running "cura.real".
There are many problems with QML under KDE, but these disappear when running Cura on Gnome for example.
So the problem was deskop related.
Since KDE is being started using some startup scripts which set some environment variables, I simply looked for these, which disable the middleware by KDE.
Now everything seems to work fine again!
Signed-off-by: Thomas Karl Pietrowski <thopiekar@gmail.com> (github: thopiekar)
