If all you need to do is convert images to a set of tiles you could look at gdal2tiles. This can be installed fairly easily if using windows with the OSGeo4w (shell)
https://trac.osgeo.org/osgeo4w/
https://gdal.org/programs/gdal2tiles.html#
Another option could be maptiler
Tilestache is more meant for vector data
Regards