Compile Error after last update

Hi, after updating plugin im getting compile error. 

27/03 11:54:35 | Failed compiling 'MultiTool.cs':

27/03 11:54:35 | 1. The type or namespace name 'BossMonsterExtensionMethods' does not exist in the namespace 'Oxide.Plugins' (are you missing an assembly reference?) [CS0234]
(MultiTool 21 line

27/03 11:54:35 | 2. 'Dictionary<MultiTool.Shortcuts, bool>' does not contain a definition for 'Where' and no accessible extension method 'Where' accepting a first argument of type 'Dictionary<MultiTool.Shortcuts, bool>' could be found (are you missing a using directive or an assembly reference?) [CS1061]
(MultiTool 49 line 46)

Changed Status from Pending to Closed

Changed Fixed In to Next Version