I just tried
cleaning out the "cache/tarballs" file of all SAR plugins, then all plugin tarballs. Sometimes old versions that are misnamed cause trouble.
C:\ProgramData\opencpn\plugins\cache\tarballs
Then updated the master catalog.
I get multiple green SAR puzzles still.
Then I removed SAR 2.5 from the plugins directory along with the directory SAR
C:\Program Files (x86)\OpenCPN 5.1.612+4f9c9c4\plugins
Restarted Opencpn and there is still a green puzzle SAR and I don't know which version it is. or where it is located yet.
We need to have the full version number listed in the Preferences title!!!!
In Win Using the path %localappdata%\opencpn\plugins
C:\Users\Rick\AppData\Local\opencpn\plugins
I found SAR_pi and removed it
Restarted Opencpn and there are no green puzzles now.
And there are no stray and unknown SAR_pi installed right now.
Update PI master catalog.
Then install SAR 2.6.1 and it now shows a green puzzle in the plugin list.
It is enabled in the Plugin List and there is no icon in the Toolbar.
So we know there is an issue with Sar 2.6.1 that needs resolution,
however the problem was being compounded by multiple old versions that were installed.
I have to go now, but can work on this more tonight. Sorry.