Once I migrate EPiServer code from 7 to 7.5 I am getting the below errors:
Any idea as to how we can fix these?
The context menu is no more in cms 7.5
You could also have a look in the class lib and see that it is replace by the quicknavigator:
And therefore marked as obsolete:
[ObsoleteAttribute("ContextMenu has been replaced with EPiServer.Web.PageExtensions.QuickNavigator.",
public class ContextMenu
So I cant se a fix but you need to rewrite the code and might need to delete som stuff as well since you do not have the same options.