NEW Keynote error [titlehere].key "can't be opened"
Hey guys, I have a new iMac and Keynote is causing some major issues.
I'm constantly getting this error: "PresentationNameHere.key" can't be opened." [OK]
I did some googling, and the issue seems consistent with moving files through a server/email/dropbox.
These files WERE moved across a server to my new computer, but I work across servers all day, so I really need to know how to fix it!!
I've tried the fix where you add ".zip" and then open the zipped file etc, but it doesn't work for me.
It seems that some combo of zipping/unzipping, changing the filename to letters only (no numbers or spaces), then resetting the computer several times does work - I've been able to open a couple of Keynote files this way, though I'm not sure exactly which part worked and how to replicate it. These files have also become unopenable again at a later time, for apparently no reason.
Any help would be appreciated.
Keynote 6.5.1
OS X Yosemite 10.10.2
iMac, OS X Yosemite (10.10.2)