First post updated
Everyone should now use the most recent plugins. (anything after 62806).
1.2.1 included support for the new EDM format that further optimizes the EDM format. This is why the newer batch of plugins was not usable for a while because they were developed, but there was no public update to DCS World to understand the new format, and since including support for the old EDM format did not make a lot of sense, the whole support for the old format was dropped. All those people who asked why their models were showing up invisible with plugins after 62806, this is the reason.
In a nutshell, use the newer plugins and all should be good. I believe they also contain support for 3ds max 2012. As always, I will monitor this thread for issues you all might have.