Could not read file O3D - Not enough memory

This happen Only with new buses
say FBW or MB 405

When I first load the bus after playing some time i get the error
Have to CTRL+ALT+DEL to shutdown Omsi and re-start omsi without buses

Then Buses work no error.

But then say if i playing with MB 405 and i want to load another Repaint of MB 405 or FBW
even if i Delete the Bus from the Map with the X
i get error Could not read file O3D and again i have to CTRL+ALT+DEL shut down Omsi.

I playing Berlin 1.4
and have many Repaints installed.

But Error dont happen when loading repaints only this new buses.

OS: Windows 7

I have 8gb Memory and GTX 580 graphic card.

i encounter the problem u mentioned either (in berlin v1.4 as well)
is it related to sth abt tickets since it's abt the o3d files?