In my case, I have found that the error happens when the two Calendar views being shared are not identical. The target view has one extra Icon column, and if I remove this from his design (or add it to my design) then Show Calendar works fine.
Anyone else experience this, or is there some way around it?
it is a very simple change. Take the ($Calendar) view, and add one more column immediately after the existing Icon column (which is column #6). In my design it is also an Icon column, with a very simple formula (like @If MyField = “1”;“logo16_blue.jpg”;“”).
I don’t think there’s anything special about what we have done, it seems from my experimenting that any difference in the column sequence BEFORE the date/time columns will do the same. I got the clue about it because the entries in the logs are pointing to a STARTDATE$ error.