Thanks Rafael, I have done so.
Meanwhile I continued experimenting and it seems that I have my plugins back, at least for now. I hope they will stay…
Here’s what I did:
I re-downloaded the Nattress plugins and put these one by one into the plugins folder. This time they both appeared in FCP’s Video Filters Menu. So far so good. I don’t know what the difference is since the re-downloaded plugs are the same versions.
Then I continued by adding my freeware plugins but I did not re-download any of them. Next I put the one called “50 Point Garbage Matte” back in. This made all Nattress plugins disappear. Instead the Garbage Matte filter showed up. So I removed it and the Nattress plugins reappeared in the menu.
I thought, this filter might be bad and set it aside. Then I continued to add all of the remaining plugins and they all showed up properly in FCP.
Just to verify that the Garbage Matte plugin was the problem, I moved it back in the plugins folder and – it showed up in the menu without making all the others disappear this time!
I don’t understand this.
It seems it made a difference in what order I added the plugins. Very strange indeed.
Furthermore it seems my Nattress plugs had become corrupted somehow since the re-downloaded ones now worked without making eachother disapper. I have no idea what happened. If someone can explain all that, I will be very thankful:)
Anyway I will not touch the plugins folder again as long as everything stays in place.
Greetings.
Andreas