The other problem is that schematics contain absolute paths to library files. I keep all my programs on the C: drive and my data on the D: drive for my home PC and E: for my work PC, so sharing schematics never mind libraries doesn’t work.
The work around I use is a junction: assuming that my libraries are in D:\ElectronicLibs\QSPice then the command mklink /J {QSpice install dir}\MyLib D:\ElectronicLibs\QSpice will create an alias MyLib in the QSpice folder. I keep symbols and library files together in the same folder, and in the symbol attribute I use a relative path. e.g. .\MyLib\opamps\LM324.txt