Mellel has some very nice features -- most of which one will never use. However, I have found it to be crash prone -- in fact, Mellel has the dubious honor of being the *only* program I have lost data in in the last few years of using the Macintosh.

Most recently I've found that I get a spinning beachball at odd and unpredictable times -- this is on a Mac where literally everything else works just fine.

One of the frustrations of Mellel is that purchasing the product only entitles you to a finite number of upgrades -- read: bug fixes. I feel that if you purchase a product, the company should support it.