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TechNote #107: Last modified: 04/26/04

“Compile Error in Hidden Module: MTLib" message in Microsoft Office after installing MathType

The information in this document applies to:

MathType 5.x (Mac)

Microsoft Word 2008 (Mac)
Microsoft PowerPoint 2008 (Mac)
Microsoft Word 2004 (Mac)
Microsoft PowerPoint 2004 (Mac)
Microsoft Word X (Mac)
Microsoft PowerPoint X (Mac)


If you are running a non-English version of OS X, you may receive a "Compile Error in hidden module: MTLib" error message when using the MathType Commands in either application.


A Compile Error occurs if the Mac OS decimal separator character is not '.', which may be the case in non-English versions of OS X.


To correct this problem, update to the latest version of MathType for the Mac. You can find out about the current version here. If you still experience problems after upgrading, please email our technical support staff for assistance.

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