If you are running Windows XP SP2 (including Media Center and Tablet Edition), and you have applied the Microsoft updates 925902 (MS07-017) and security update 928843 (MS07-008), and you are using Realtek audio components on your system, you may receive this error message when trying to use ElsterFormular, Realtek HD Audio Control Panel, TUGZip, and CD-Tag.
{application name} - Illegal System DLL Relocation
The system DLL user32.dll was relocated in memory. The application will not run properly. The relocation occurred because the DLL C:\Windows\System32\Hhctrl.ocx occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.