Export bitmap only at low res (Mac)

I can export bitmaps successfully if the resolution is set to something below about 6, which for a test drawing I'm working with means a resolution of 750x660.  If I select a higher resolution, or specify dimensions of a few thousand pixels, I get an empty file produced (not just a white image, but no data, zero bytes).  This behaviour is regardless of the export file type.  

I'm running 2.0.2 on Mac OS X 10.9.1

tested on OS/X 10.9, with resolution 10, and I got a BMP of 5500x5500.

can you test with other dxf files?