@Paku- Run the ```git submodule update -f``` command on the root droidplanner folder, or keep excluding those changes from your commits.

By the way it should show something like this:
```
arthur@arthurnote:~/Projects/droidplanner$ git submodule update -f
Submodule path 'HorizontalVariableListView': checked out '7e17360124a5083a1f81ab63c91789bfc2e2fbd7'
Submodule path 'usb-serial-for-android': checked out '936e51bb2e05b7db42c937d4c3257f08b3729fbc'
```