Android Question Package name of library

Does your library make any calls to the Main module that was in the IDE when you were developing it? Does it use any custom Types that were defined in the Main module?

Yes, the library makes events.
I have attached two simple projects to show the problem.
TestLib is the library and Test is the program using the library.
Open Testlib and compile to library.
Open Test and run.
It works fine, both projects have package name 'b4a.example'
Change the package name of Test to something else and it will not compile.

In your Common class, try changing Owner from a String to an Object. You'll note that the signatures of SubExists() and CallSubDelayed() both expect Owner to be an Object (for example, Main), not a String.

I have found the correct subject to search for: NoClassDefFoundError
I still have not found a solution.

I have read all posts about my problem, but the solutions only describe how to fix Eclipse.

I am compiling a library in B4A and reuse it in B4a.
I can only get it to Work if the package name is the same in the library and the consuming program.
I have uninstalled all Java, reinstalled Java6, Java 7 and Java8.
Tried to fix system variables.
I have rewritten my example to expose a class that starts a service.

Is it possible to have different package names in a program and a library ?

SOLVED.
@Roycefer You showed me the way.

B4A can resolve a string to an object name.
It Works in the same program and if the program and library has the same package name.
When using a library you must use the object name and not a string.