Chr a missing object?

Ive got some code in an xla file which Im trying to distribute for other users to use. It works fine on mine, but Im getting the following error on the other PC's:

Code:

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Compile Error:
Cant find object or library

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and its hightlighting the string function Chr from Chr(34) (for double quotes). Heres a screen of exactly what Im getting...
http://www.dynamic-innovations.net/uploads/1/blah.JPG

I thought this was included in all default VBA setups. Any ideas??

Thanks!

It should be. Sometimes VBA messes up though.

On the none working computer, open excel and the file. Tools>Macros>VB editor

Under the References tab look for "Missing". Its probably that which is causing the problem.


Also, is it different version of Excel? This also may cause problems (if you are going from say 2003 to 97).