Hi there, In order to prevent memory problems I have opted to use the 'stat' option in the mirfeatures command. However when I use mirexport to access my data in the workspace the filenames seem to disappear. The code looks like this: >> s = mirfeatures('Folder','stat') >> mirexport('Workspace',s) ans = types: {1x376 cell} filenames: {} data: {1x376 cell} Without the 'stat' everything seems to work beautifully! Thank you in advance for your help. Scott Scott Beveridge Research Student School of Engineering and Computing Glasgow Caledonian University Cowcaddens Road Glasgow G4 0BA Scotland 0141 331 8448 M714 Emotion Classification in Contemporary Music www.gcal.ac.uk/eccm<http://www.gcal.ac.uk/eccm> Glasgow Caledonian University is a registered Scottish charity, number SC021474 Winner: Times Higher Education's Widening Participation Initiative of the Year 2009 and Herald Society's Education Initiative of the Year 2009 http://www.gcu.ac.uk/newsevents/news/bycategory/theuniversity/1/name,6219,en.html