[palosanto]

I have a piece with annotations and I cannot export it as msf.  
I get this message when I try to export it (after selecting destination and options):

   

The destination is not full nor is an SD card.  I've tried to a local folder and also to Google Drive which I use all the time.
It seems to be complaining about the MSP cache folder but any other pieces seem to export fine.

Any idea what can be causing this?
Juan