having issues with xmlspaner

[Neroeclipse69]

i cant get xmlspawner to work with runuo 2.6 any help plz

Errors:
+ Custom/XmlSpawner Core/XmlQuest/XmlQuestHolder.cs:
CS0115: Line 491: 'Server.Items.XmlQuestHolder.OnAdded(object)': no suitable method found to override
+ Custom/XmlSpawner Core/XmlQuest/XmlQuestToken.cs:
CS0115: Line 556: 'Server.Items.XmlQuestToken.OnAdded(object)': no suitable method found to override
CS0115: Line 94: 'Server.Items.XmlQuestTokenPack.OnAdded(object)': no suitable method found to override
+ Custom/XmlSpawner Core/XmlQuest/XmlQuestBook.cs:
CS0115: Line 181: 'Server.Items.XmlQuestBook.OnAdded(object)': no suitable method found to override