The issue is that your Barcode.dm has an open multi-line comment that's never closed, normally this would cause a compiler error, BUT you're actually closing the comment inside of your .dme file with a stray */ at the end of the file.

You're basically commenting out everything included after Barcode.dm. When that issue is resolved the rest of your files will be compiled, which will result in a lot of other errors because you're doing a few things wrong.

The first is you're mixing tab indentation with space indentation, you have to pick one and stick with it, I recommend using the tab button.

The next is that you're defining variables in multiple places, which is going to result in duplicate definition errors.