Installed apps greyed out
I'm just starting out with the Nokia developer tools, and I'm having problems running my application (which at the moment is just a simple counter) on my Nokia phone.
The app runs fine in the NDS Series 40 MIDP 1.0 emulator, but when I export the contents to a .jar file and install it to a phone, I can't open the application (the menu item is greyed out).
I've installed other (sample) apps that came with their own jar files, but when I compile and create jar files for those apps from their source code on my own, I run into the same problem.
I've created jar files with Eclipse, JBuilder, and the Java SDK's jar.exe program, and none of them seem to work.
I think I'm just not creating the jar files correctly. Is there a proper way to do this?
Thanks for any help you can give.