Premiere says clip is offline when exporting, clip is there, and export fails
So, long story short, whenever I attempt to export my sequence, I get an error message that says a clip is offline...I checked and the particular clip is online (and all others are online). When I export, a variety of things tend to happen, however the end result is usually always an error message that the export failed. I have used both Media Encoder and Premiere to export. At the moment, I have used Media Encoder, which is frozen with 16 seconds to go (and it appears the AAC file and Md0 file are still separate with an unreadable MP4 file). I have created a new premiere project, and imported the old project in, but same result. I have also replaced the suspect "offline clip" with other clips (I have three back ups on separate hard drives).
Additionally, for about four months this year, I was able to export this project fine. I then went back in and adjusted some audio levels, and that was when the problems started.
I have used my laptop (Lenovo Ideapad 110 AMD A4-7210, 15.6" Touchscreen Laptop With 4GB Memory, 500GB Hard Drive, Windows 10) and my Mac desktop (iMac (21.5-inch, Late 2012, Processor 2.7 GHz Intel Core i5, Memory: 8 GB 1600 MHz DDR3, Graphics: VIDIA GeForce GT 640M 512 MB). Plus I have used a couple of other computers and MACs, of which I don't know the exact make and model (but I do know it exported fine on these computers during the 4 month period of sucessful exports).
The footage is 4k footage from a Panasonic DVX200, I have tried exporting as both a 1920X1080 output file, and as a 3840 x 2160 4k output file.
Let me know if anyone has any ideas...
