Dreamweaver Extension Failure errors??

I did close DW and I did download and install extensions. I have just noticed that I do not have the extension manager installed. I would think you could not install extension without the extension manager?

I had forgot that you had to install the extension manager.

I have downloaded it an attempted to install and have received this error:

Error 1316. A network error occurred while attempting to read from the file C:\WINDOWS\Downloaded installations\Macromedia Extension Manager 1.7\Macromedia_Extension_Manager.msi


I have tried to repair and I still get the error above.

I can see the extension manager folder and the extensions in the folder. Should I uninstall the extension manager via control panel Add or Remove??

I just removed the extension manager and I was able to reinstall without errors but upon running DW I still get the same errors.

What do you think about removing DW and reinstalling and then install the extension manager. Then I should be able to reinstall the extensions, what do you think?