Error calling old AJAX calls using "XMLHttpRequest" Msxml2.XMLHTTP.5.0

I encoutered a problem when i called the .aspx page using the Ajax calls of  "XMLHttpRequest"  Msxml2.XMLHTTP.5.0. I am currently working with VS.NET 2008 (.net framework 3.5). Below are the list of errors i saw when i was going through the Application event log of my system.
scriptle2.dll, version 9.0.21022.8,
Faulting application devenv.exe, version 9.0.21022.8, stamp 47317b3d,
faulting module scriptle2.dll, version 9.0.21022.8, stamp 47317e18, debug? 0, fault address 0x0000328c.

.NET Runtime version 2.0.50727.3603 - Fatal Execution Engine Error (7A2E10D2) (0)
Hanging application iexplore.exe, version 7.0.6000.16915, hang module hungapp, version 0.0.0.0, hang address 0x00000000.
 
I solved the issue, by doing the following things.
(1) I installed the "AjaxControlToolkitBinary" and "Mi ...