SKLP D.lib
From Solid Graphics Wiki
The SKLP.lib is SolidKit Library's lib file containing implementation of SolidKit Library Pro package specific functionality - such as implementation of classes for Constructive Solid Geometry.
The SKLP_D.lib file is supposed to be used with Debug builds of your applications.
The lib file is supposed to be used with Multi-threaded Debug DLL Microsoft Visual Studio's runtime libraries.
To link your application with the SKLP_D.lib file - your settings must include path to directory where the lib file is located. This can be specified either in the Additional Library Directories linker section of the project settings, or in VC++ Directories - Library files global settings for all Visual Studio Projects.
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