The Turtles, one of the top pop vocal groups of the 1960s, broke up, not because Mark Volman and Howard Kaylan couldn't get along. They broke up because of an ongoing series of lawsuite.
Have a look at their story. It is presented humoursly, but it is still very sad how they were so unfairly taken advance of.
My thanks to Artie Wayne for bringing this to my attention.
Michael