It finally installs
When I go to update allowed usergroups in the uShop settings I get this:
Warning: Invalid argument supplied for foreach() in /includes/functions_ushop.php on line 535
Warning: Invalid argument supplied for foreach() in /admincp/ushop/ushop_admin.usergroupenmasse.php on line 11
Warning: Invalid argument supplied for foreach() in /admincp/ushop/ushop_admin.usergroupenmasse.php on line 15
Warning: Invalid argument supplied for foreach() in /admincp/ushop/ushop_admin.usergroupenmasse.php on line 18
Edit: I clicked Saved Values and now it appears to be working.