YEM export problem

[Zimacs]

Hi. I've downloaded the Celtic Pack for my T5-76.    YEM recognises the pack as suitable for my Workstation and opens it to reveal all the available voices etc.   However if I try to export it to USB it won't transfer with the message 'Not enough space or check that not write protected'   It's a 4GB USM and it's not write protected.   I've also tried to create it direct to my computer hard drive but get the same message.   If I try to transfer it wirelessly it recognises my T5-76 and the Expansion Memory Board at 1023Mb, which is empty, and says the file to be imported is 59MB   It starts the transfer but just as it shows Mak.... the transfer fails with message 'Not enough memory available'   Any ideas please?