If you are having performance issues with your SDK application and believe that your install is corrupt then you should consider re-applying your Cognos 8 SDK install. One way to do this is to locate your cmplst.txt file which is located under ...Cognos Install path/Cognos\c8.
You would then make a back up copy of the file before proceeding with commenting out all references to SDK components such as:
SDKCSP_version=SDK-AW-ML-RTM-8.1.60.28-0
SDKCSP_name=SDK Uninstall
VERXML_C8SDK_version=VERXML_C8SDK-AW-ML-RTM-8.1.60.28-0
VERXML_C8SDK_name=Verxml C8SDK
SDKCSP_name=SDK Uninstall
VERXML_C8SDK_version=VERXML_C8SDK-AW-ML-RTM-8.1.60.28-0
VERXML_C8SDK_name=Verxml C8SDK
.......