I honestly spend 50% of my time in the Editor getting various types of errors. Frustratingly, most are fatal and I have to close OMSI using the Task Manager, often losing work.
It is also very frustrating that all of the error messages are in German. I appreciate it's a German-designed sim but I would have hoped to have had the error msgs changed to English in the English version.
I absolutely love OMSI but my experiences in the OMSI Editor are very different!
I built a whole small route last evening, and the final two street splines (it was a circular route) absolutely would not join together. I was either getting an error message, or else they'd join but leave a gap, which the bus would smash into when going over that section of street.
Ended up deleting all of the work as there seemed no solution after many hours.