XIFF with Flex2

Hi all,

Today, I checked xiff source out but I can not run Flex2 project from this sample http://paazio.nanbudo.fi/tutorials/flash/xiff-chat-part-1 .

I am a fresh-man of Flex but I am familiar with XMPP.

When I run above sample from Flex2, it got error at getLogger() method of LoggerFactory class. It seems mx.logging package can not find.

Could you help me figure out why this error happen?

Step by step guide is very welcome .

Best regards,