The Newton.dll should be in the same folder as where your executable application gets when compiled by DBPro.
The NDB.dll must be in the plugins-user directory. Only ONE NDB.dll should exist on your system and this is where it should be.
Clean up ALL other occurences of the NDB.dll
Also, check that you have the latest version of the wrapper.
I have tried a lot of different projects with the 5.8 DBPro release, and it works as smooth as ever. I had some concern about the FVF format which is for example when scaling convex hulls, but after some different tests all I can say is that everything seems to work fine.
Please drop a line if you get any reproducable errors with the latest release and I will be on it !
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