CommandBar Problem

I use John Walkenbach's Menu Creation code in Excel 2003:

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In some programs this code works and in some programs is doesn't. Where it doesn't I get the following message from executing the "Set MenuObject..." Expression: "Run-time Error 9, Subscript out of range." The only subscript is the "1". Note that cBar which is set to CommandBars(1) works.

If I've run a program that works first and then run a program which by itself creates this error, no error occurs.

How to fix this?

Thanks, Mac

Bump
So thanks if you look at this.
Mac