Spore Creature Creator and DirectX woes

Just some info to hopefully save some time for others. During the installation of the Spore Creature Creator Demo you are prompted to install DirectX 9 (wtf?). I went and started the installation until it came up with this error:

A cabinet file necessary for installation cannot be trusted. Please verify
Cryptographic Services are enabled and the cabinet file certificate is valid.

After searching the web and trying everything under the sun, it came down to deleting the "websetup" folder in the %systemroot%\system32\directx folder. After it was removed I ran the setup again and everything went as planned.