mrescude:
That did it, I was using pin 2 for the last bit of the LCD. Thank you very much!Where can I look at all the pin usage? Maybe this will save me a lot of trouble in the future.
Look at the middle of the page "input and output". For shields, you should be able to find pin usage where you buy them.
What happened today is a good thing for me. As a shield designer I should have looked at Leonardo. Now that I have, I'll spend some time thinking what to do with my shield update, especially with pins 2 and 3 now.