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My name is David.
This error often appears when files are associated with a program that cannot open the file. To resolve the issue go to one of the file (photos or video) that produce the error and right click on the file and click Properties. Near the top of the window that appears there is an "Opens with" line and a "Change" button. Click the Change button and select the program you wish to use to open the file and then click Apply and OK. Then test the new configuration by opening that file and other files of that same type to see if the issue is resolved. If this configuration change resolves the issue perform the same procedure on every file type that has caused the error to appear.
Please let me know if you need assistance with any of the steps and the result.
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