hi leonardo, i just checked on OSX (leopard). i can't replicate the issue either and am getting radiological outputs. strange. chris is probably the best to tell... cheers- andreas -----Ursprüngliche Nachricht----- Von: FSL - FMRIB's Software Library im Auftrag von Leonardo Cerliani Gesendet: Fr 07.11.2008 17:07 An: [log in to unmask] Betreff: Re: [FSL] AW: [FSL] (unwanted) X swap when saving nii.gz reconstructed from PAR/REC 4.1 >you may also want to let Chris Rhorden know about it. hi andreas, I'll do it. As I said in the other reply, when converting under windows there are no problems. leonardo