I thought at first I had a license problem but that’s not it.
I have a working system on my desktop that loads 10 plugins - 9 from MBS and 1 from Einhugur.
I downloaded and install Xojo 2019.2.1 on my Laptop so I could work on the project when on the road. Everything seems fine except it will not load any of the 10 plug-ins. No messages that I can find - they just don’t load.
Maybe you’ve already done this, but have you copied the working Plugins from your previous version of Xojo to the Plugins folder of the 2019r2.1 version?
For each version/install of Xojo, the Plugins folder needs it’s own copies.
Especially when it comes to the MBS SQL Plugin… you need a newer Plugin version that will work with 2019r2/3.
Don’t use “old Plugin versions” from 2019r1.1 or earlier.
Otherwise - if you’re working on Windows, the IDE might show the Plugins assumingly being loaded, even though none of them will work (because loading a single one failed).
That’s covered in <https://xojo.com/issue/57087> and <https://xojo.com/issue/58284>