Mitch,
This can still happen to the professionals also. One thing to keep in mind is to try to use the solvents and paints from the same company. Do not use Sherwin Williams base and PPG clear as an example. This has happened to me also and had a paint rep come to see. Most companies do testing on their own products so this doesn't happen.
I had nothing but trouble with Sherwin Wrinkles

don't like it. Sikkens is more costly but it's worth the money.
Hope you get it sorted out. DB.