Log Name: System
Source: Microsoft-Windows-WAS
Date: 13.06.2012 08:34:45
Event ID: 5002
Task Category: None
Level: Error
Keywords:
I got tensed about this issue and finally i got solved.
Please make sure that the following option is correct in Advance Settings in Application pool.
Application Pools>Default Application Pool > Right click and select Advance Settings.
And then check whether the option "Enable 32 bit applications" has been set as "False". It should be False
I got solved by did the above change.