The base textures for the SFBT parking lots and bus stops don't show up when I plop them in my cities. I've downloaded the most recent version of the only dependency listed in the downloads, but the textures still do not show up.
Do you mean these parking lots? (http://sc4devotion.com/csxlex/lex_filedesc.php?lotGET=1726) If so, the textures are included in the download and should get installed automatically in Plugins/SFBT/Parking Lots/Texturen. If the files/folder is missing I'd recommend installing the Parking Lots again.
If it is the mentioned pack, you also should erase the not wanted textures in the textures folder after installation. There are three different sidewalk textures in it.