Jim --

I haven't encountered this problem, but here's something to try.

Test the string to see if it's longer than 255. If so, put in a loop and assign only 254 characters at a time to the cell. Perhaps that would emulate the manual insertion of characters.

cMemoRest = cMemoText
nMemoLen = MIN (LEN (cMemoRest), 254)
DO WHILE nMemoLen > 0
    cMemoInsert = LEFT (cMemoRest, nMemoLen)
    mysheet.activecell.Value = mysheet.activecell.Value + cMemoInsert
    cMemoRest = IIF (nMemoLen < LEN (cMemoRest), SUBSTR (cMemoRest, nMemoLen + 1), "")
    nMemoLen = MIN (LEN (cMemoRest), 254)
ENDDO

Jay