Copy the file from the folder (typically .DLL ) to C:\Program Files\Labcenter Electronics\Proteus 8 Professional\MODELS .
Avoid EXE installers from unknown websites. A legitimate library is just 2-3 files ( .IDX , .LIB , and a .HEX for the controller model). nokia 5110 lcd proteus library download
Copy the files from the folder (typically .LIB and .IDX ) to C:\Program Files\Labcenter Electronics\Proteus 8 Professional\LIBRARY . Copy the file from the folder (typically