These extensions:
Dynamic Dropdowns. Version 2.7.5
Pro Maps for Google. Version 1.0.7
are not compatible with Dreamweaver CS6
this extensions:
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.