check, if they are available in desktop modules table, otherwise execute the following script from Host :: SQL
INSERT INTO {databaseOwner}[{objectQualifier}DesktopModules] ([DesktopModuleID], [FriendlyName], [Description], [Version], [IsPremium], [IsAdmin], [BusinessControllerClass], [FolderName], [ModuleName], [SupportedFeatures], [CompatibleVersions]) VALUES (37, N'Log Viewer', N'Allows you to view log entries for portal events.', NULL, 0, 1, N'', N'Log Viewer', N'Log Viewer', 0, NULL)
INSERT INTO {databaseOwner}[{objectQualifier}DesktopModules] ([DesktopModuleID], [FriendlyName], [Description], [Version], [IsPremium], [IsAdmin], [BusinessControllerClass], [FolderName], [ModuleName], [SupportedFeatures], [CompatibleVersions]) VALUES (39, N'Skins', N'Allows you to manage your skins and containers.', NULL, 0, 1, N'', N'Skins', N'Skins', 0, NULL)
in any case execute:
INSERT INTO {databaseOwner}[{objectQualifier}ModuleDefinitions] ([ModuleDefID], [FriendlyName], [DesktopModuleID], [DefaultCacheTime]) VALUES (79, N'Log Viewer', 37, 0)
INSERT INTO {databaseOwner}[{objectQualifier}ModuleDefinitions] ([ModuleDefID], [FriendlyName], [DesktopModuleID], [DefaultCacheTime]) VALUES (81, N'Skins', 39, 0)