I seem to have solved my own problem (will need some further testing but for now it is working). For some reason the display object that has to be printed needs to visible on the stage. So constructing an (sprite/movieclip with classic textfields) in memory and sending it directly as a printjob resolves into a crash. But if you attach it to the display/stage before sending the printjob, the problem seems to be resolved. Maybe this is the same reason why a printed sprite/movieclip gets corrupted after printing.