You might get more of a response if you post to one of the Notation Forums - this forum is for developers of plugins that work within Finale.
Finale is compatible with East West, although you will need to do some additional setup on the EastWest side. I found a good thread on the EastWest forums that details how to do this for a Windows machine. I'm sure a quick search on the same forum will help if you're using a Mac.
Hope this helps!
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