Print / Saveas - sometimes Matlab crashes in same Method

Hi everybody. I've got a problem with the print or saveas command. I'm not sure at all where the root of this problem is, but I guess i should first explain short what the method does (It's a quite long programm written, so I think it won't be a good idea to copy all the thousands of lines :D)

I've got 2 files from Abaqus CAE. In these files, I've got some lists. These lists are the nodes and stresses I got from the modell. Matlab reads these and saves them in a cell. Afterwards it calculates things like principle stresses etc. When this is done, the first plotting method sets specified colors for each value calculated.

Until this point, it works without any problem. I've got a green-redish plot as it should be. This plot, like all the others, are made with "figure" and later "print" to save the picture as a file. The second plot is quite the same as the first one. It should plot only the green part of it. But sometimes, Matlab crashes at this point (right in the print line). I get this message: Matlab has encountered an internal problem and needs to close.

I figured it out, when my CAE mesh has fewer elements, it runs through all the methods without any problem. So e.g. another modell, a little less complex one, also runs through this second (only green-part) method, but crashes when I want to print the third plot (plot of reference vectors).

I know, I could just easily set higher seed size to the mesh, but I cannot do this due to the analysis of the whole thing. I already tried to set the resolution of the print from -r300 to -r50 (which is already way to small!), but it didn't help :( Also the saveas command brings up the same error.

I hope you understood my issue, and I also hope somebody can help me please :D Regards

BTW: here's a picture of the first two plots of the lower complex modell, just to give you an idea what I was talking about. (The colors don't represent the height of stresses ;) ) http://fs1.directupload.net/images/141204/empkrjc9.jpg