On the other computer, can you visit the webassist website?
If the webassist website is blocked on that computer, the serialization process will fail.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.