Can't Import Web Pages

I have DW 5.0, and DesignExtender120. with the following extensions. I have tried to remove, reinstall and reinitialize DW, but keep getting errors. Help:)
Cookies Toolkit 3 3.1.3
CSS Form Builder 1.x 1.0.2
CSS Menu Writer 2 2.0.6
DataAssist 2 2.1.0
Design Extender 1.2.0
Digital File Pro 2.0.4
Dynamic Dropdowns 2.7.5
Dynamic Web Charts 1.0.5
eCart 4 4.5.2
Eric Meyer's CSS SCULPTOR 2 2.0.5
Framework Builder 1.0.2
iRite 1.0.3
PowerGallery 1.x 1.2.2
Pro Maps for Google 1.0.7
SecurityAssist 1.x 1.1.9
Site Import 3 3.0.4
SiteAssist Professional 1.0.9
Universal Email 3 3.0.7
Validation Toolkit 2.3.5
Dreamweaver HTML5 Pack 1.2.7
PalettePicker 1.0.4
Surveyor 1.0.4
Theme-It 1.0.0
WA Valitdation Toolkit Recipies 1.2.0

Design Extender only works on Dreamweaver CS3 and above. I'm not sure if you meant you have CS5, or actually version 5.

What is the exact error you are getting when you try to install? Let's work on one at a time. Install whichever extension you are trying to use right now and let me know precisely what errors or issues you experience.

Yes, meant CS5

I open DWCS5, click on WebAssist>Import Webpage(s), fill out the fields for the 4 step wizard,and when I click Finish, I get the error "Error in button onClick: TypeError: MM.SiteToolsActivate is not a function.

Uninstall and reinstall Design Extender. It looks like installing one of the older extensions after may have overwritten some key files with older versions.

I uninstalled Extender. To confirm, I relaunched Dreamweaver. I am now getting an error during DW launch that the WA_unInsall2.htm script has errored on line 12, curDOM has no properties. Should I uninstall any of the older extensions to keep them out of the way. I now have Data Bridge, MiSQL Server Behaviors and eCart6 to also add in.

Please close down Dreamweaver and rename your User configuration folder for Dreamweaver to: Configuration_old

Then reinstall the extensions. It appears it is still holding onto some older files and that should force it to do a clean installation. You shouldn't have issues as long as you only install the extensions you listed and get the most recent version.

Ray, I totally removed Dreamweaver, deleted all legacy files, reinstalled DW CS5 and installed Design Extender. It is working now. I still have to install the (3) new WA extensions (Data Bridge, MiSQL Server Behaviors and eCart6.) But before I do that, which extensions do I have that are not included in the new extensions that I bought? I assume I need to reinstall the older extensions first, before installing the new ones.

Cookies Toolkit 3 3.1.3
CSS Form Builder 1.x 1.0.2
CSS Menu Writer 2 2.0.6
DataAssist 2 2.1.0
Design Extender 1.2.0
Digital File Pro 2.0.4
Dynamic Dropdowns 2.7.5
Dynamic Web Charts 1.0.5
eCart 4 4.5.2
Eric Meyer's CSS SCULPTOR 2 2.0.5
Framework Builder 1.0.2
iRite 1.0.3
PowerGallery 1.x 1.2.2
Pro Maps for Google 1.0.7
SecurityAssist 1.x 1.1.9
Site Import 3 3.0.4
SiteAssist Professional 1.0.9
Universal Email 3 3.0.7
Validation Toolkit 2.3.5
Dreamweaver HTML5 Pack 1.2.7
PalettePicker 1.0.4
Surveyor 1.0.4
Theme-It 1.0.0
WA Valitdation Toolkit Recipies 1.2.0

Don't install any of the old ones. They should all be included in the new ones.

Ok