Thanks in advance for any help or ideas.....

I have two add-ins that I use to query external data sources. I can't
have both loaded in Excel at the same time because they share the menu
bar name and I can't change either of the names.

Half of the time I want to have one add-in loaded in Excel, the rest of
the time I want the other one loaded.

My goal is to create an add-in I can send to users that allows them to
click a button on a custom toolbar and switch the loaded add-in to the
one they want.

I used the following code as an example:
' Remove DataSource1 add-in
AddIns("DataSource1 Server DLL").Installed = False
' Load DataSource2 add-in
AddIns("DataSource2 Server DLL").Installed = True
(and vice versa).

The problem is that when I use the toolbar to load and unload the
add-ins I get an error when I try to use the menubar of a loaded
add-in.

For example:
MANAGE_ADDIN.XLA creates the custom toolbar with the buttons that loads
and unloads add-ins.
DATASOURCE_ADDIN1 is one of the add-ins that I use to query external
data.

I can unload and load add-ins easily with this XLA file.

If I select an item on the menubar of the add-in I just loaded it gives
me the following error:
The macro "MANAGE_ADDIN.XLA'!do_something" cannot be found."

The do_something macro is stored in DATASOURCE_ADDIN1 and not
MANAGE_ADDIN.

Is there a way to tell excel to look in the correct add-in without
changing the menu of the DATASOURCE_ADDIN itself?

Thanks.