iOS beta 8.4 iPad can't backup to iTunes

Since installing iOS Beta 8.4 on my iPad Air 2 today I am unable to backup the iPad via iTunes (encrypted backup). It fails near the beginning every time with:


iTunes cannot backup the iPad "My iPad" because there is not enough free space on this computer to save the backup.


which is p[atently an incorrect error since (a) I backed up the iPad successfully immediately before I applied the 8.4 Beta and (b) I have over 280 GB of freee space available. I am still able to backup my iPhone which is on 8.3.


Anyone else seen thsi issue?


Chris

iOS beta 8.4 iPad can't backup to iTunes
 
 
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