Windows 7 Ultimate Sp1 x64

Installation and uninstallation are alarmed.

install:
Unable to execute file:
c:\program files (x86)\spybot - search & detroy 2\SDWSCSvc.exe
CreateProcess failed; code 577.

uninstall:
a problem has occured in BitDefender Threat Scanner. A file containing error information has been created at C:\Windows\TEMP\BitDefender Threat Scanner.dmp. You are strongly encouraged to send the file to the developers of the application for further investigation of the error.

the "C:\Windows\TEMP\BitDefender Threat Scanner.dmp" is totally empty, nothing in there.