Lumy Skin Patch has been updated to 1.0.13 so skins should be working again. Existing modpack builds were updated to the fixed version.
Technic SSP was updated to version 7.2.6.1 4 years ago
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name (Technic SSP) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Technic SSP from the list on the left. The launcher will handle everything else!