If you have custom libraries in SPACE GASS 10 or earlier formats, you can import them into the current version of SPACE GASS by opening the library editor, right-clicking on the desired library type in the library editor tree, selecting Import -> From Library and then locating and selecting the library to be imported. Note that SPACE GASS 10 custom libraries are always called SGCustomLib.MDB (or SGMoveC.dat for moving load vehicles) and are usually located in the SPACE GASS 10 program folder (c:\Program files (x86)\SPACE GASS\Exe or c:\Program files\SPACE GASS\Exe).