https://forums.autodesk.com/t5/inventor-forum/opening-drawings/m-p/5823059#M360043 I checked my graphics drivers and they are up-to-date. Yes, I did accept<BR />the solution as the problem is somewhat resolved but not totally. Maybe I<BR />should not have "accepted the solution".<BR />I will check the virus software and make sure the Inventor files are not<BR />being scanned.<BR />Thanks for your help<BR />_____________________________________________________________________________________<BR /><BR /><BR />Kevin J. Pinks | Schneider Electric | End User Business Group -<BR />Industry Business | Plant Solutions | Telemetry &amp; Remote SCADA<BR />Solutions, Mechanical Draftsperson &amp; Document Control<BR />Phone: +1-613-591-1943 ext. 79387 | Fax: +1-613-591-1022 |<BR />Email: Kevin.Pinks@schneider-electric.com | Site:<BR /><A href="http://www.schneider-electric.com" target="_blank">www.schneider-electric.com</A> | Address: 415 Legget Drive, Kanata, Ontario<BR />K2K 3R1 CANADA<BR /><BR />*** Please consider the environment before printing this e-mail Fri, 18 Sep 2015 12:59:20 GMT Anonymous 2015-09-18T12:59:20Z