Why does Prism 3 Mac crash when I try to save to a zip drive?

There is an apparent conflict between the Iomega drivers on external ZIP drives and Prism 3 for Macintosh. We'll try to fix this problem in the next release. To bypass the problem, don't save directly to an external USB ZIP drive or try to read data stored on an external USB ZIP drive. Instead save to your hard drive, and later copy to the zip drive.