Could you download PDF Plus 7.81 and retry?
http://www.pdfwizard.com/docuCom/products/plus/PDFPAWW781STR1.exe

If the problems still exist, please contact support@pdfwizard.com.
We will get back to you as soon as possible after receiving your mail.

By the way, we changed the enabling and activation procedure since version 7.77. Therefore you may not use your original serial number to enable or activate PDF Plus 7.81.
Please visit http://www.pdfwizard.com/eng/Customer/retrievenewsn.asp to see how to retrieve a new valid serial number, and then use the new one to enable and activate PDF Plus 7.81.

［This topic edited by znsupport at 8/2/2005 1:39:37 PM ］