Truth be told, I'm a Final Cut editor, but recently I had to manually convert one of my projects to Avid to prepare it for a colorist (annoyingly, I did this two weeks before Automatic Duck became free).
Anyway, now the colorist has sent me back my graded project on a drive, and has sent me two files: a .avb file, and an .mxf file. I can get the bin open in Media Composer, but the mixdown in the bin appears as offline, and refuses to reconnect. When I try the "Link to AMA file" on the mxf file, I get the message "Unable to link to file or volume. You may need to download and install the AMA plugin." I've already installed the AMA plugin and imported other files using that interface, so I don't think that's the problem.
What am I missing? I am in no way fluid in Avid, so it's quite possible I'm mishandling the importing of these files (which I'm only trying to import so I can transcode them back to ProRes so I can get back to Final Cut!).