Beginner in Dreamweaver

I have just started to learn dreamweaver and databases from Sean R. Nicholson
book but I encountered problem that I cannot solve. So is there anyone who can
help?

Message:

Description: An error occurred during the parsing of a resource required to
service this request. Please review the following specific parse error details
and modify your source file appropriately.

Parser Error Message: Could not load file or assembly 'DreamweaverCtrls,
Version=1.0.0.0, Culture=neutral, PublicKeyToken=836f606ede05d46a' or one of
its dependencies. The system cannot find the file specified.

Source Error:
<%@ Register TagPrefix="MM" Namespace="DreamweaverCtrls"
Assembly="DreamweaverCtrls,version=1.0.0.0,publicK eyToken=836f606ede05d46a,cultu
re=neutral" %>
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.

Thanks