I am using Windows 7 (64 bit) OS , Inventor Pro 2012 (64 bit) and Excel 2007 and cannot get spreadsheets to link to Inventor models or assemblies. I have followed the instructions of a number of tutorials for linking spreadsheets to Inventor files but nothing works. When I select LINK in the Parameters dialog box all I get is the name of the file chosen for the link but none of the spreadsheet parameters show up. Is there something missing in my installation that would cause this problem ? I am not using the Vault or network licensing.