I currently have an 11MB TIFF file that I am trying to convert from raster to vector lines. I get the point where I click on the Primitives > Line tool, and as soon as I select anything, the program locks up. This happens every time. I am on a Dell Precision M6600 running Windows 7 64-bit with 16 GB of RAM and anVidia 3000M graphics card. System resources do not appear to be the issue seing how I am nowhere near maxed out.