Hopefully you have found a solution. If you have, please post the solution. If not, try this.
(The JPEG file type in the previous post did not work for me)
1. Make a copy of the file and place it on the desktop of the boot drive.
2. Try opening up the document from within Photoshop; As a Smart Object
(If it opens, it will open flattened and not layered, don't panic)
3. Close the file (If the next step doesn't work, you can always go back to step two and salvage a composite version)
4. This is the key -- Now go to the Open Recent flyout list and choose the document again.
In my case, it worked. It opened the layered version of the original file. This step bypassed the Smart Object instruction and the Adobe tag that is somehow breaking these files.
Good Luck