Strange errors Compiling PLSM2

I've decided to try out PLSM2, since I'm looking into a large terrains for a game, but I seem to be getting a rather strange (and as far as I can tell, nobody else has had it), I'm compiling SVN revision 2497
1>c:\users\dan\programming\libs\plsm2\plugins\paginglandscape2\include\OgrePagingLandScapePoolSet.h(72) : error C3861: 'PLSM2_ASSERT': identifier not found

Has anyone else had this error before?

Edit:

Fixed! I had to add "#include "OgrePagingLandScapePrerequisites.h"" to the top of the file