Can't Load Library from Memory

Since Monday morning, anytime I tried opening Windows Explorer from Programs or by double clicking on the icon, I kept getting a pop-up that said:

"Can't Load Library from Memory".

The error or warning message disappears when clicked on OK, and the Explorer program opens up immediately. Everything seemed to work but the annoying error cropping up whenever I tried to access or open Windows Explorer.

The error relates to ipv6.exe and it's associated dll files. This issue can be resolved by rename a file found at c:\windows\system32\ called ipv6monl.dll to ivp6monl.old

The Pop Up Window will no longer appear whenever Windows Explorer is opened.

How to tell AutoCAD File Format

If a user opens up a dwg file created in a newer version of AutoCAD, chances are the following error will appear:

Drawing File is not Vaild (error)

You can view a given DWG file in Notepad and look at the string at the beginning of your file, to match the version it was created in from the list below.

MC0.0 - DWG from Rel. 1.1
AC1.2 - DWG from Rel. 1.2
AC1.4 - DWG from Rel. 1.4
AC1.50 - DWG from Rel. 2.0
AC2.10 - DWG from Rel. 2.10
AC1002 - DWG from Rel. 2.5
AC1003 - DWG from Rel. 2.6
AC1004 - DWG from Rel.9
AC1006 - DWG from Rel.10
AC1009 - DWG from Rel.11/12 (or LT R1/R2)
AC1012 - DWG from Rel.13 (or LT95)
AC1014 - DWG from Rel.14, 14.01 (or LT97/LT98)
AC1015 - DWG from AutoCAD 2000/2000i/2002 (or LT, Map or relative Desktop version)
AC1018 - DWG from AutoCAD 2004/2005/2006 (or other product in the "2004", "2005" or "2006" family)
AC1021 - DWG from AutoCAD 2007 (or other product of the "2007" family)

There are also other, internal file versions: AC1001=pre-2.5, AC1005=pre-R10, AC1007=pre-R11, AC1008=pre-R11, AC1010=pre-R13a, AC1011=pre-R13b, AC1013=pre-R14, AC1500=pre-2000, AC402a=pre-2004a, AC402b=pre-2004b