Actually, if you searched their website, you'd find this:
Quote
Problem: When PC-cillin attempts to do an update, either by Intelligent Update or by manually clicking the Update button, the message ActiveUpdate Internal Error 47 appears.

Solution: During the update process, PC-cillin downloads the update files as compressed files. Then, it would decompress it on the system for PC-cillin to be able to use them.

The ActiveUpdate Internal Error 47 message means that the update files downloaded are invalid or corrupted.

Read the solution to your problem here