Just downloaded PDF convertor - won't work!

I have just tried using PDFCreator for the first time but I can not get it to work. I am asked to download Smarttracks Quicksound Plugin, then told it is not available on my computer. The document (which is in word) eventually appears on the list in Creator and in my document file as a PDF but when I try to open I get the message that the file is damaged and can not be opened.

Can anyone help?

1/2 hour later now, I kept trying but computer crashes when I try to save. Very dissapointed.