Hello -

I've developed and distributed an add-in to my users, using a separate
Set-Up workbook to install the add-in for the user. This add-in was
built using XL07 (in compatability mode) and well-tested in XL02 (all
systems using Windows XP) ... most users are able to successfully
install the add-in, although a few have had to close then re-open
Excel. In all of these cases, the add-in loaded properly during
subsequent Excel re-starts.

However, some users have seen that the add-in appears to load properly
-- it appears in the list of add-ins (ToolsAdd-Ins...) and is checked
to indicate that it's loaded. However, the included custom menu
doesn't appear and there's no way to activate the add-in manually. De-
activating the add-in and then re-activating (all using ToolsAdd-ins)
fixes the issue (add-in loads fine) ... until the user re-starts
Excel, when the add-in again appears to load (check-box checked), but
no custom menu, etc....

Is there some Excel and/or Windows XP setting that would cause this
behavior? A registry setting perhaps?

It may useful to know that a similar phenomenon exists with another XL
add-in (created by a professional software developer) we use ... but
until now, it doesn't appear as though anyone has really investigated
why this might be happening.

TIA,
ray