Hi, I tried all answers indicated above. But only most basic one worked. Just verify that settings are OK (as in post by Daniel Mead29-Mar-2013 00:29) then close SAP completely . Then delete .mdb file in %user%\AppData\Roaming\SAP\SAP GUI\History . Once you logon to SAP again , it will create a new .mdb file and should have resolved issues. This solution worked for all (half a dozen) of my users that had this issue.
Thanks,
Jason.