Is there some way to get the last working Eclipse plug-in back ?

Ok... progress.

Started again with blank workspace, then File > Open Folder > WebRequest.

Then File > Add Folder to Workspace > BulkDownload

Then View > Run

Then, below the big "Run and Debug" button there's a link that says "create a launch.json file".

After selecting that I am presented a list that includes WebRequest and BulkDownload.

I select WebRequest.

Then I am presented a list of available debuggers. I select Monkey C.

At THAT point, I see the triangle icon and a list box that was not there before.

Selecting the drop down list, I now see an option Add Config (BulkDownload) along with some other options.

I add the BulkDownload config file.

At this point I can select a "Run App" item in the list and run the selected app. Ctrl F5 also runs the last selected app.

Unbelievable that it takes all of that, and all the time and confusion along the way to get to this point.

Rant removed.

Thanks for your help.

No worries, glad it's working for ya now!

I do think adding multiple projects is fairly unintuitive, as it's very tempting to try to add the parent folder of multiple projects and expect each child folder to be added as a separate project. I've prolly done that a couple of times.

And you're right, the correct menu item is Add Folder to Workspace (as I said initially), not Open Folder (as I said later on). Sorry about the mistake in my previous comment, my bad.

MSFT should really rename that menu item to "Add Project Folder to Workspace" or something.

I still use eclipse (2023-06 now) without any problems, completely don't feel VC.