Glenn my man ! You are a genius. Begin-onload/end-onload seems to have cured the problem. Thank you !!

If I change the code slightly, to remove setting the RebootPendResult before the second IF, thi sshould result in the Blue button NOT displaying. Inst...

This is how it should look, and does look using an older version and the CONTROL command instead of the BUTTON command.  expected-buttons.jpg

@glenn Yes, that code does work, but if I try setting the RebootPendResult to False, the button still appears. If I try the following: SET Rebo...