"IrriBase.exe - Illegal System DLL Relocation" error on opening the database editor
If you get the error:
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.
A fix can be downloaded and applied from the following location
http://support.microsoft.com/kb/935448/
or by installing Service Pack 3 for XP.