In 64-Bit versions of Windows, the system registration (registry) is separated in 32-Bit and 64-Bit keys. If the Registration Editor (Regedit.exe) is started on 64-Bit systems, the 64-Bit version of the Registration Editor is started by default.
In 32-Bit systems the registry entries of Engineering Base are stored underneath the following path:
HKEY_LOCAL_MACHINE\SOFTWARE\AUCOTEC\Engineering Base\<EB Version>
In 64-Bit systems the registry entries of Engineering Base are stored underneath the following path:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\AUCOTEC\Engineering Base\<EB Version>
If you want to learn more about the differences between 32-Bit registration and 64-Bit registration please also read the following description on the web:
http://support.microsoft.com/kb/305097
