Hello MikeC and Bob and thanks again for your input.
Bob, I followed your advice and have tried it with the "Include new rows and columns in table" both checked and unchecked, but continue to see the same problem: no code is executed after the initial row is inserted.

My plan was to have the table sorted in date order, but with some forthcoming payments entered; I therefore wanted the user to place the cursor on the first FUTURE date and insert a row (or multiple rows determined by an input box) at the cursor position.

MikeC, when I say the code stops, it just stops executing. I can be in the middle of a loop, stepping through with the yellow bar, but when I get to the command that enters a new row, the yellow bar goes off and all further lines of code are simply not executed. If I continue to press F8, I get a yellow highlight at the start of the Sub again. If I run the code without stepping through, one line is entered if I use Range(myTable).ListBbject.ListRows.Add, and n rows are added if I use Selection.EntireRow.Insert, but no actions beyond that point occur - not even a simple message box.

I'm working on diminishing returns here - as has been mentioned, I could get the user to add the data to the bottom of the table, then sort it into date order. I'll try one last thing - copying the module and table into a new workbook. If that doesn't work, I might strip it down to a sample file and post it up here, but I don't really want to waste any more of your time.