I have written a simple app for series 60 v2.0 to with a popuplist and an information note which runs great in the emulator but when I install it on my Nokia 6600, the app runs but the information note and popuplist do not.
to be fully honest I haven't use the 2.0 SDK too much lately, mainly just doing some DLL's that won't work in 6600 when made with 1.2 SDK, anyway could you provide the class names you are using and the part where you are using them, maybe somebody could see what the problem is.