NortonSystemWorks gets error message

[Guest]

When I attempt to run any of the Internet options listed under Norton
CleanSweep in Norton SystemWorks this message has started to apprear:
Norton SystemWorks: Nmain.exe - Bad image

X The application or DLL C:WINDOWS\system32\MSVCIRT.dll is not a valid
Windows image. Please check against your installation diskette.

What have I done? How can I fix it?

 

[Guest]

Edward adds to / amends original report:

When I attempt to run any of the Internet options listed under Norton
CleanSweep in Norton SystemWorks this message has started to apprear:

Norton SystemWorks: Nmain.exe - Bad image
X The application or DLL C:WINDOWS\system32\MSVCIRT.dll is not a valid
Windows image. Please check against your installation diskette.

A follow-up message box reads:

Norton CleanSweep
! CS32.DLL unable to load CSCORE.DLL. Error=0x000000C1
%1 is not a valid Win32 application.

What have I done? How can I fix it?