Can't transfer purchases from iPhone to Computer, says there is not enough free space on the phone
This is really strange. My phone (iPhone 6 Plus) has 2.2Gb of space available. I am not trying to sync the phone or send anything to the phone. I am using the "File > Device > Transfer Purchases" option to copy updated and new apps from the phone to my PC via iTunes (12.2). However, it starts the transfer then about half way through, aborts with the message that there is not enough free space on the phone, and the phone it self throws up a warning that storage is full. Then the capacity bar in iTunes updates and shows *ALL* free space is now filled with "Other" and the phone is "Over Capacity". Restarting the phones clears this "Other" and I am back to having 2.2Gb free.
To me, it seems like in order to copy things from the phone to the computer, it first creates a (possibly compressed?) copy on the phone and then transfers that, but requires a very large amount of free space to do this, if the apps are large. In this case its "Infinity Blade 3","Fallout Shelter" and "Vainglory" - combined they are about 3.6Gb. I don't wish to delete any of them from my phone because it would take hours to re-download them.
Is there a solution I'm not seeing here? It seems crazy that you need *SO* much space on the device to copy from it.
iPhone 5, iOS 6