Tool Pallettes - Moved from 2008 to 2012- Pallette can't find Block

Collegue of mine moved his tool palettes from a directory called ACAD2008 to ACAD2012. Tool palettes can't find the associated blocks becouse the support path still points to the ACAD200 Directory.

Is there a way to "globally" change the associated path? There are too many blocks to think about changing each one manually.

Any suggestions?

Thanks

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