I had the recent version installed already but I tried uninstalling it and deleted the cachefile then did a reinstall. Still having the same error come up.
I've also noticed that when I do try and run Site Import and I get the error MM.SiteToolsActivate is not a function, I do a restart of Dreamweaver and I then get a message on start-up of Dreamweaver "At line 22 of file "<path-to-config>:Floaters:WA_SiteTools_ProgressV2.js": theDOM has no properties". So I then have to reset my layout and delete my cachefile again and do another restart. It is starting to get a little tedious now to be honest so any help would be greatly appreciated. Thanks.