They are no longer being supported/updated, so much of gnozal's stuff has become incompatible with the latest versions of PB. Concerning the license, it is in each Library's help file.
Quote:
PureLVSORT library license
This library is provided 'as-is', without any express or implied warranty.
In no event will the author be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial
applications, and redistribute it freely.
Freeware by Philippe GUNTZ a.k.a. gnozal [http://gnozal.ucoz.com/].
Please report any bugs at the purebasic forum.