Application closes after Import/Export song on debug mode.

[JulissaDantes]

When the application is set to debug mode and the user tries to pick a song to export or import, by clicking on File->Import->Song or File->Export->Song.

The bug only happens on debug mode.

[Kiroto]

Confirmed this also happens when the user tries to open an Autopilot file, opened as a folder. (On debug mode)

1. File->Import->Folder (Open select file dialog)
2. Open a .pbf file (Tested with Autopilot_test.pbf