Photoshop CS6 file saved thumbnail makes file blank??

Question

Hello,
          I've recenlty seen this problem, the file i process in adobe photoshop CS6 comes blank and the previous thumbnail also disappear. I've checked the settings in finder and adobe photoshop cs6 but i didn't change anything there. Can any one help??
i need to submit wedding pictures but blank thumbnail makes me lost track of pictures. I'm attaching a picture below, the first row is what i've processed with adobe photoshop cs6 and the thumbnail disappeared.

Answer 1

I have to make a lot of color corrections because this is film taken from the early 40s to the early 50s. I tried doing it in Avid Studio, Pinnicle studeo and Corel Draws Video Studeo which is what Avid Studio became. None of them alow for the amount of correction allowed in Photoshop. I already owned Photoshop 5 so I upgraded to 6 to take advantage of its advances in video. The plan was to break the converted files up in smaller peices so that Photoshop could handle it and use Premier Pro perhaps to do other post production editing. The origional avi files are a movie about 1 hr and 15 min long and another one about 45 min long. The CODEX is MJPG in avi.