ClassCastException

[jasonhell]

Hi, I try to use webservices api of KnowledgeTree into my Zimlet, but when i use it there is the exception ClassCastException for the class apache.axis....Service.

If I use the same code in a java class it works (I thinked was a problem with java version).

I use this code into a jsp class, called by javascript in my zimlet, and don't work.

I saw that this is a frequent problem (this exception), how can I resolve it?

Thanks