Mac 10.6.8 with newly installed CS6 has the following problems.
1-tif files save with a pxr extension
2-jpeg files save with an img extension
3-when opening a file "Enable" remains blank even when previously set to "All Readable Documents."
Simple: You have copied plug-ins from an older PS version to CS6 anmd it's messing up your stuff. Remove the offending plug-ins and get updated versions for CS6.
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