V
venkatesh kumar
This error occurs when u accidentally deleted some dll file in temp folder.. the file may also ve been deleted by your anti virus.. To fix it go to ur PC's resitry editor.. To open the editor Start>Run> and type "regedit". There go to HT_LOCAL_MACHINE>Software>Microsoft>Run and locate the DLL file that causes the error or Edit>Find and search for the file that creates the error.. In your case wtkcohst.dll.. You'll get a service that uses that file.. U just delete it.. U re now free of that error.. Reboot n enjoy..