Are these Avid media master clips or AMA linked clips. Offline clips will show the last known location for that clip until its relinked to the same media in a different location.

Divide and conquer. Split the time line in half (make sub sequences of each half) and try exporting each one. Keep doing that till you isolate the offending clip.

Personally I'd move the old media to a PC MediaComposer with QT still installed AMA link the clips via QT and transcode to a finishing codec. Then take that media mback tot he mac. It should link to the original clips. (do a test couple of clips first)

Have you tried forcing the linking to use a specific plugin? You can select the plugin to use (it defaults to auto)

I wasn't aware you could consolidate RAW red files. I've always just copied all the RED clips used in the sequence and relinked them to the sequence AAF.

I'd start with a simple sequence with just one audio track with one audio clip and try exporting that. Then add a video track and try exporting that. Then add a second audio clip and second video clip and leave a gap of black and test exporting that. The key is finding what is triggering the media offline detection. It could be the "black"

In your setting format tab: switch to an SD project raster to do an OMF export (remember to switch format bac after) Re the AAF export try divide and concur. sub sequence off a small section (try it with a few different parts of the timeline) Try removing tracks and exporting. Basically wittle it down till you get an export that may point to a problematic

Its unlikely to be sucessful. It aslo depends how the media was ingested. I'd make the correct fps project. ingest the correct source footage. Copy the early selects sequences into this project. Upon opening them they will be converted to new sequences with the 25fps framerate. Now try relinking those sequences to the selected newly ingested clips

In a 29.97 project you should be able to select 59.94 in the format tab.

Folks im approaching time to upgrade my Symphony Dongle again and looking back I've just not had the need for it since I last purchased the years support. So its current and has support till Dec 17th 2023. Its a USB dongle and works fine but the green LED fell out years ago but I've never nothered to sort it. If your UK and I know you then happy