There are two things that you can try right off the bat.
First, make sure OS X and Photoshop are completely up to date. On OS X, click the Apple at the top left > Software Updates. In Photoshop, Help > Updates.
Second, it may help to reset your preferences. There's a great article on how to do that: http://forums.adobe.com/thread/375776
Give those a shot and see how it goes.
Thanks for the response. The OS is at the most recent update. (I've not moved to 10.8 for a number of reasons.) PS is at 13.0.1 which is the latest I'm aware of. Did the delete preferences trick. Wow. Didn't realize how tailored I had my environment. Will take a while to get it back to my preferred. Unfortunately, the open and save as problems persist. Again, only with PS.
This can also be caused by unsupported plug-ins. Head into your plug-ins folder (Applications > Photoshop > Plug-ins), and remove any duplicated plug-ins that may be present.
If there are no duplicates, I would suggest moving all the plug-ins to another folder, launch Photoshop, and see if the issue goes away. If it does, slowly add the plug-ins back, until that issue comes back.
I appreciate all responses particularly from an "Official Adobe" human being!
Unfortunately, a significant amount of effort has been expended with no joy here.
I have done the following;
(1) examined every plug-in folder for duplicates - None found
(2) deleted the symlinks (aliases) Topaz created referencing their plug-ins in /Library/Application Support
(3) reinstalled the Topaz bundle - no change
(4) Spoke at length with Topaz support and have been assured that all of their plug-ins are CS6 compatible.
(5) Have had the same conversation with Nik regarding their 2 plug-ins - assured that they are compatible.
Frankly I'm stumped here. I've combed my system in everyway I can without any change in PS behavior - on Open it defaults to blank and "Save as" selects the wrong format.
Question for the experts. Would deleting PS completely and then reinstalling make a difference or am I now in uncharted territory and on my own?
Thanks for all assistance,
Still need to save as TIFF but can't seem to get there.
An additional data point. With CS6 I switched packages from I think it was "CS 5 Design and Web Premium" to "CS6 Design Standard." As a result I still have copies of Aftereffects, Dreamweaver, and Flash, etc. My decision to drop the extra programs was partly based upon the high cost of upgrading but mostly was driven by the fac that I do my web work by hand and don' t really want/need all the "flash" that many sites now use.
Would the presence of older non-CS6 programs have any effect on PS performance?
Look at Help -> System Info.
If you see any Adobe plugins in the non-required list, you made a mistake.
If you set the optional plugins folder preference to point to a previous version of Photoshop: you made a mistake.
Somewhere you have duplicated file formats, most likely from a previous version of Photoshop.
You need to get rid of those duplicated file formats, and all Adobe plugins that you mistakenly copied from a previous version.
Reinstalling won't change your preferences, or plugins you copied by mistake.
It would only reinstall the bits that ship with CS6 -- which aren't a problem.
I'm having the same problem with the ENABLE drop-down greyed out in the 'OPEN' dialog box and having to scroll to the bottom to select All Readable Documents.
I recently added plug-ins but guess what? I don't remember which ones they were and they all have the same date. Were there plug-ins there when I installed CS6? Should I delete them all?
Would someone explain where I find "the non-required list?"
Is there an easy way to return to the default plug-ins [if such a thing exists] to get rid of this annoying bug.