Hi. Not that message, but the following when draggging and dropping one of the 2 guitar samples....
The file format of C:\Users\Public\Documents\MAGIX_Music_Maker_16\Basics_16\Rock Alterantive Vol. 2\Guitar\CamperB 1.OGG cannot be read by MAGIX Music Maker.
Please ensure that that the affected drive is not full or write protected.
The C: drive is NOT full or write protected, as other samples e.g drums, keys etc. drag and drop fine.