Re: Cannot open an Excel spreedsheet.

One more update. I just tried a more normal sort (using the values of one
of the columns), saved to a new file, closed, then opened that file. That
worked. So the ONLY thing so far that I've done that today results in a
file that then cannot be opened is to sort by the column names (left to
right sort).

I would have thought sorting left to right to be a bit rarer of an action,
so I bet there's still something else out there that also causes the error
message, but who knows? -- Carolyn