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 Close Inventor before running the AddIn installaion. 
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Be sure to have the Addin Inventor DN User intsalled 
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Double click on the installer iDrawingChecker downloaded beforehand. 
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The following installation window will show up. 
 
 
|  Install keyKey to execute the addin installaion | 
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|  Cancel keyOpens the window  confirm the exit from the installaion | 
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