This version of dll is not supported (AutoCAD LT)
When running AutoCAD LT the following error messages comes up:
DRCAuto software is compatible with the first version (release) of AutoCAD LT 2010, prior to apply SP1, that is: 184.108.40.206
To see the AutoCAD LT 2010 version you are running, see the properties of proddata.dll under:
C:\Program Files\Autodesk\AutoCAD LT 2010\proddata.dll
DRCAuto software for AutoCAD LT 2010 is only compatible for first DLL release version from Autodesk: 220.127.116.11
The same happens for earlier versions of AutoCAD LT 2009 and 2008 if the SP2 (AutoCAD LT 2009) or hot-fix (AutoCAD 2008) have been applied (AutoCAD LT 2008).
Getting an earlier version of AutoCAD LT DVD or CD installer might solve the issue.