Same error :(
No it is not working,
I have uninstall all my extensions of webassist (I have other many extensions of other companies, but I assume they are not in conflict)
Paste this in my terminal--- chflags nohidden ~/Library/ ...the system didn´t ask me for my password as I read it have to do.
I search for the file that I have to erase, but it didn´t apeard in the folder of Dreameweaver/Es_es ( version in spanish )/.. I search in all my computer and there is no file named MacFileCache
So I reinstall Data bridge and I have the same problem :(