For a couple of months I have been editing a fairly large project in Premier Elements 13. The project contains AVCHD and MOV files. The night before last Premier stopped displaying mov files and replaced them with a red multi-language media offline slide.
Thanks for your input.
The usual cause is that the media files were moved or removed from the location they were in when the project was started.
Thanks, whsprague, but none of the files have moved, so that's not it.
However, I also discovered that I cannot import MOV (and probably other file types). So, the problem seems to involve a subroutine which normally translates imported files.
MOV files are an Apple design. Premiere Elements 13 required Apple's Quicktime to provide codecs that can be used by Premiere Elements for operation with MOV files.
Download here: Download QuickTime 7.7.9 for Windows
Some will say Quicktime is a "problem" on Windows PCs because Apple stopped supporting it and it was later accused of having a security flaw in the .exe file. The codecs are not a problem. There are two approaches. One is that the Quicktime installation has a "files only" option. The other is to rename Quicktime.exe to Qucktime.bad (or something). Since it was already on my computer, it was easier to rename it.
What operating system are you using? If Windows 7, do not update Premiere Elements to the current version until you update Windows itself. This is to prevent issues with the AVCHD clips that have Dolby encoding.
I've had this happen every time I've made a video. Very frustrating. I thought, like your other responder, that it was because I moved some of the files around on the desktop, but some of the times it happened, I didn't move them at all. Have to go back and locate every picture and replace it, as well as any transitions or effects. I still don't know why?