djmabeizy 0 Light Poster

Hi guys,
I downloaded from niwradsoft.blogspot.com and installed software (Seven Remix XP 2.1; aero shake; Aero Snap; Shortcuts Windows 7) to provide a Windows XP that look Windows 7
Works fine the only problem I have now is whenever I try to run and executable:

1) For instance I’m trying to installed Blackberry desktop software and I get the following error below:
The system DLL user32.dll was relocated in memory. The application will not run properly. The relocation occurred because the DLL C:\WINDOWS\system32\SHELL32.dll occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.
Computer specification:
Windows XP pro
Service Pack 3
Symantec endpoint protection 11.0

Any assistance or ideas would be great I’m just a bit annoyed I have tried everything to resolve the problem but to no avail