thanks a lot, very useful reply - I only tried to open, and resave the file making sure it had no sub-transparent pixels.. but I didnt try changing res. Thanks a lot

I have used many images successfully but this one seem to crash as soon as it jumps to the part where it should trace the outlines, however - it makes an image in the folder before it crashes. it crashes the entire sketchup.

Any ideas?

On a sidenote - many of the images I had would not trim on my work computer using the newest sketchup - but my home computer with the last google version of sketchup seem to run most fine - except this one.