The UT99ExtensionPack_UMODv1.1.zip file you have requested: Add Ons / UT99 Extension Pack v1.01 (UMod) - 3.23mb is not available. Perhaps try browsing all files for the game Unreal Tournament and upload any files you want to share or are missing. This is the only information we could locate:
UT99 Extension Pack - Basic EditionGeneral Overview/DocumentationContent1. Module/Component Overview for Basic Edition1.1 Feature List1.2 Setup Type1.3 Documentation Type1.4 Updates2. Module/Component Details for Bas UT99 Extension Pack: Some bugs fixed, Testmap added by request.