I'll give it a shot.
Given that you're on Windows (b/c you're using msvc++),
your environmental variables should look like this:
Value: C:\CS (or C:\...whatever)
Value: C:\CEL (or C:\...whater)
Tools-->Options-->Project and Solutions-->VC++ Directories:
Note that the directory where you have CS installed is not necessarily that but wherever you have it located. Same is true for CEL.
Make sure to include the appropriate Preprocessor definitions and the appropriate Additional Dependancies
I did this but I am still having the same problem whenever I try to run the application. It compiles just fine. I tried setting CRYSTAL and CEL both as system and user variables:
I checked the file system and the .dll file is there in the root CS directory and the \out\release\bin directory.