in Extension Manager I click on Install from file and choose zipped C:\C\Extensions\SlicerDebuggingTools.zip
and here I get error: No extension description found in archive C:\C\Extensions\SlicerDebuggingTools.zip
I do not have much experience of writing extensions so I don’t know yet the requirements to extension. What is the possible reason for this?
By the way I work with my SlicerCAT wich is built (Debug) but NOT installed yet.
Windows 10 x64, MSVC 2019
If you build a custom application then you need to build the extensions as well. Normally you bundle all the extensions, because setting up your own extension server and asking users to install extensions is more complicated for both the custom application developers and users.