the only extensions you should have installed are:
Data Bridge - 1.1.2
Design Extender - 1.1.1
eCart 5 - 5.0.6
Free Tools
all of the other extensions are a part of either Data Bridge or design Extender.
uninstall all of the extensions, then reinstall in this order:
eCart 5 - 5.0.6
Free Tools
Design Extender - 1.1.1
Data Bridge - 1.1.2