|Problem: ld complains: Multiple defined symbols
Solution: I had inadvertently added a .h file to the "Other sources"
Removing it from PB solved this weird one.
Problem: ProjectBuilder crashes often (PR1)
Solution: Turn off auto-indexing; wait until project indexes before modifying or building. What can bring it down is the DO app projectServer. You may have to kill the projectServer by hand.
Problem: If you had code which called [self name] to return an object's Class name as a string, you'll need to replace that code.
Solution: Use new function to get it: NSStringFromClass([self class]).
Problem: Compiler error: "Origin of method "copySelection" cannot be determined "
Solution: There was a second implementation of this method, deleting it caused this rather obscure error to vanish. Too bad it didn't say "copySelection: multiple definitions:"!