I have had this same problem ever since moving to Intel based mac. We currently have 2 macs and both have the same problem but not always on the same files?? I am sure this is a mac OS issue. I use photo libraries quite a lot and can never get the unzipped files to open correctly, they always have the 'NO ENTRY' sign on them. Sometimes files that I have had for ages just suddenly won't open. Others sometimes open if you hover the mouse pointer over them for a few seconds or click on them a few times, it's almost like waiting for the computer to decide whether or not it will allow you to use the file. I normally just go to the same folder through my old mac and change the permissions from there. Everything is fine then, but what a frustrating waste of time!
While repairing disk permissions definately solves the immediate problem and lets you keep on whorking how on earth do you stop having to do this time and time again?? I don't need to repair and reboot nearly as many times as lindswah007 but generally have to do so every time I upload a bunch of photos from the last job. This is getting beyond a joke!
I have had this problem for some time. Repairing Premissions only fixes it for a short time then you need to do it again. I also tried repairing permissions on a deeper evel of the disk. This hit me big time while trying to do a long render in Final Cut Pro which would stop just before a few hours of work ended, Turns out this was also a Permissions problem and seemed related. That ws a major liability.
I triued fixing this with by reinstalling the OS and that semed to work for a while but it just started again. Apple suggested signing in as a new user but then all my files and settings are gone, and it could take a few weeks for the problem to re-appear anyway.
Apple - where is your support or do you only care about iPhones. iPads and iTunes these days?
I have been researching my family tree and saved literally hundreds of records from Scotlandspeople.com so that I could work on them when I had more time. Some I have had no problem with viewing and printing but recently I have been working on a large batch that I can't view or print. I get the message "The file “.....” couldn’t be opened because you don’t have permission to view it."
When I "Get Info" the permissions section seems ok (Read and Write). Some records are .tif and some .jpg but even when I compare the "good" ones with the "bad" ones they all seem to have the same info.
Having read all of the above the easiest (for a technophobe like me) sounded like the 4-step solution
Go to disk utility
Choose check permissions
Choose repair permissions
Hmmm. After checking out how to find disc utility - ! - I find there isn't an option for checking permissions. Please can someone make this fool-proof for me. It is driving me crazy.
PS when I go to the Scotlandspeople website to download the same "bad" images again via the previous searches button, I still get the same message about not having permissions. Any new names I haven't previously saved and I need to download work perfectly.
I hope this isn't too confusing...