I have a .cfmacro file which I tried to import - click on 'import' in settings / macros, navigate to the folder, click on filename and then "OK". Nothing happens. The procedure is described in HelpGuide/TriggersAndMacros/ under the heading "Import/Download Macros" but it is rather vague what happens on clicking "Open". For me on Windows 10 64-bit, nothing happens. I should be able to set a hotkey for it etc. but I can't. Please advise.

Did you push this button (see png).
So after downloading the macro(s) you need to synchronize them.

I didn't click on "sync macros". I don't remember an instruction to do so. I have tried now, but it did not do anything.

Sorry to hear. For the time being a workaround? Create an empty macro. Visit the CbF-website and select the macro you want to have. From there you can copy the content/script of the macro and which you can paste in your empty macro.

Thanks - I have tried this but I think I would have to be more expert in C# or VB.Net to do this.

There is no need to have knowledge about C#. See attached tutorial to get your premade macro from the CbF-website. Don't hesitate if you have additional questions.

Yes, it does. But I can't make "import" of a user-written macro work.

I attach it here - it is simply an alteration of decrement.cfmacro - see the line with the comment
'my change'.
I don't see that there is anything in the file that would cause "import" simply not to work.
I would expect an error message of some sort.
Please note that I am moving on from this problem now. I no longer need ClipboardFusion for what I am doing.

I tried to send it but it hung.
I am moving on from this problem now. I will see if I can send this without an attachment.