Dynamic Dropdowns. Version 2.7.5
Pro Maps for Google. Version 1.0.7
are not compatible with Dreamweaver CS6
PayPal ecommerce toolkit. Version 4.5.4
conflicts with the WebAssist Free Tools extension.
Free tools contains the functionality of the eCommerce toolkit.
uninstall the extensions, then install only these 2:
WebAssist Free Tools. Version 1.1.1
MySQLi Server Behaviors. Version 1.0.2
they are the only 2 that you have that are compatible with Dreamweaver CS6.