LookupMW suggests a Merriam-Webster dictionary add-in. This could be an add-in in Word or Office's Startup folder or a COM add-in. In any case, the way to get rid of the macro would be to uninstall the add-in. See
http://word.mvps.org/FAQs/Customization/CheckIfAddinsInstalled.htm
Whe I open Word this error message appears{ Word cannot open this document template. C:Program Files\...\Lookup_9.dot.
I can key text and save it in My Documents. But I can't retreive the saved document. Error message {the file is a template is not available.
When I try to close Word . . . the following messsage appears:
Changes have been made that affect global template,Normal. Do you want to save those files.
I copied the following ***help info from CNET. I tried it, but when I search for the Normal. dot, there was no outcome.
***I don't think you lost your files. You just can't open them for some unclear reason.
Start with deleting all occurrences of normal.dot you find on your machine, and try again. If the problem persists even without the presence of an old normal.dot, post again with full and exact error message.

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