How to fix my IMac Preview that won't save files?
I own a IMac 10.10.5 OS X Yosemite
3.2 GHz intel core i5
NVIDIA GeForce GT 755M 1024 MB
When I edit Images on Preview and try to save I get messages like
Or
And I Cant Export either, even when I change the name
This Error only happens sometimes, more often then not though so I need to fix it but don't know how.
iMac (27-inch, Late 2013), OS X Yosemite (10.10.5)