undefined function Right in expression

A very simple query in a database is working perfectly on any computer I have exept on 2.

There I get the message

Undefined Function 'Right' in Expression

I looked for the visual basic editaotr references.

Visual Basic for applications is the first. it is checked and I can not uncheck it as functions of it are used in the database code.

When I cloese the database, of course I can not access the references any more.

I copied the files needed from a working computer to the problem computer, I disinstalled VBA and access and installed it again. Nothing helps.

So what is next?
Who is Participating?
Scott McDaniel (Microsoft Access MVP - EE MVE )Connect With a Mentor Infotrakker SoftwareCommented:
No, you cannot uncheck the VBA reference. You should have several references already checked in your database (VBA is one, as well ADO and/or DAO).

Merely copying the files over may not help. YOu must make sure that your target machine has the same reference libraries, files, ActiveX controls etc as are used on your development machine.

Can you list the references from a "working" computer?
The error message may be misleading.  Try going into the VBA editor and compiling the code to see if anything is broken.  This often causes the most basic things to not work.  

If that doesn't find the problem please list the references you have marked since that's the only other possible answer to your problem.
vspruytteAuthor Commented:
the checked references in a working computer or on the computers with the problem are exactly the same
vspruytteAuthor Commented:
the checked refernces are the same. as the files have been copied, they are the same. as I can not uncheck and recheck the VBA, how can I correct the links if they are not correct (what I can not see because the referecne is too long to be seen completely)
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