For some reason my files saved as .MGU will only play back realtracks. Most of these files date from my previous version of BB (2007) but also of three I've done since I updated to 2013 a couple of weeks ago, only one will playback properly. This is a realstyle with a MIDI melody track? The others worked fine when I did them.
I think this must be MIDI setting thing but for the life of me I can't see what.
Any help much appreciated.