Testing my app on the s40 5th edtition emulator and am getting the error message "Invalid application Delete?" . Now the app is already tested on symbian3 / and anna/belle and works fine. The midlet uses the following packages:- wireless media api 1.1, midlet 2.0, cldc 1.1 And it uses the standard java package RMS records system . Does anyone know why this error message is occuring as far as I can see the api's it uses are compatible with this lpatform.