Hello, I am a beginner to mobile programming and can't get my apps to work on my phone.
They work just perfect on the emulator (I am using Nokia IDE for Java ME (Eclipse) v1)
but when I put them on my phone (a Nokia C3-00) there is always this error message "Invalid application".

I even tried a simple hello world app with the same result.

Can anyone give me a hint where my mistake might be?