I'm getting the following error in the Oxide log...  

21:23 [Error] Failed to load extension Oxide.Ext.RustIO (BadImageFormatException: )
at (wrapper managed-to-native) System.AppDomain.LoadAssemblyRaw(System.AppDomain,byte[],byte[],System.Security.Policy.Evidence,bool)
at System.AppDomain.Load (System.Byte[] rawAssembly, System.Byte[] rawSymbolStore, System.Security.Policy.Evidence securityEvidence, System.Boolean refonly) [0x0000e] in <7d97106330684add86d080ecf65bfe69>:0
at System.AppDomain.Load (System.Byte[] rawAssembly, System.Byte[] rawSymbolStore, System.Security.Policy.Evidence securityEvidence) [0x00000] in <7d97106330684add86d080ecf65bfe69>:0
at (wrapper remoting-invoke-with-check) System.AppDomain.Load(byte[],byte[],System.Security.Policy.Evidence)
at System.AppDomain.Load (System.Byte[] rawAssembly) [0x00000] in <7d97106330684add86d080ecf65bfe69>:0
at (wrapper remoting-invoke-with-check) System.AppDomain.Load(byte[])
at System.Reflection.Assembly.Load (System.Byte[] rawAssembly) [0x00005] in <7d97106330684add86d080ecf65bfe69>:0
at Oxide.Core.Extensions.ExtensionManager.LoadExtension (System.String filename, System.Boolean forced) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0