I'm still asking about classpath...
As it's said in Jwrapper's docs:
If you want to add a file which is part of your classpath you can add a classpath attribute:
<File classpath="yes" >jars/myjar.jar</File>
In your xml specified:
I think it means that you're declaring 'gameapp' as package that's missing in your Game class (you're using default package).
If you use default package you should specify '." (current directory) in your classpath (at least if you specify -cp or -classpath in java's cmd line).
Btw, as it's also said in Jwrapper docs:
If you want to add a file and give it a specific path after installation relative to your app's installation folder you can specify a path attribute:
<File classpath="yes" path="mainjar.jar" >jars/myjar.jar</File>
if I get it right it's your case.
So, please tell how your app's cmd line is looked.
Also, I recommend you to add explicit package to your class. It may make your life much easier ;-) .
Nevertheless, could you please check if the 'Manifest.txt' is ended with \n or \r.
Hope it all will help and I wasted Internet traffic usefully :-).