[SOLVED] Qubicle Wont start anymore


i have been using qubicle steam edition for 144 hours now, and suddenly it stopped working.

Running windows 7, nothing new installed, nothing changed.

Steam starts, no message nothing. Qubcile appears open, but its window never shows up



Problem was closing it on a two-screen setup (on the second screen) and reopening Qubicle on a one-screen setup.