Add-in functionality with .xml files
 

Dear group,
I have an instrument at my place of work which exports data to Excel as
a .xml file. The machine opens Excel directly and exports the data,
leaving the sheet open on the screen. I have created an add-in which
contains code to carry out an analysis of the data. The macro from the
add-in is launched from a new button on the menu bar and it works well.
However, and here is the but,.. the new button is only available when
I have previously launched Excel. When the instrument opens Excel the
button is not available. If I double click the icon of a saved data
file and open it with Excel the button is also available.
I'm sure I have missed something simple here but can anyone tell me how
I might get the add-in to launch every time Excel is opened, even when
the instrument launches Excel?

Many thanks in anticiaption.

Simon