networkdays error and vb

[greglange]

When I open an excel file using vb code through MS access, the networkdays function in my spreadsheet gives me an error (#value). When I open the same file by opening excel from the start menu and then opening the file the networkdays returns the correct value. Any suggestions?
Thanks for your help

 

[Anne Troy]

A little birdie told me that if you have BOTH the analysis toolpak AND the analysis toolpak for VBA loading as add-ins, this could cause the problem. Apparently, networkdays will run as a worksheet function with the analysis toolpak running, but if the VBA one is running, it will try to use code, which is (I'm told) not desireable for your use.

 

[greglange]

So how do I get around this problem? Does anyone have any vb script that can get me around this problem, or can I turn on and off the add-ins when I need them?