I've spent the better part of the day trying to figure out how to convert one of my missions made with the SDK from 2005 over to use the "new" SDK. I've hit some trouble with the OP2Helper library, though. I have it set to build Release, but it keeps building as Debug. Weird, but I can work with it. Unfortunately, when I go to compile my mission, I get an unresolved external error on the CreateTubeOrWall function. The function is definitely there, in OP2Helper.cpp, so... not sure what to do about it. Has anyone else run into either of these problems?