Everything is working fine with YorkieTalk.
First, try to log out of your YorkieTalk account.
Try to clear your Internet cookies and then sign in again, as the problem appears to be related with your browser.
https://helpdesk.jetnet.aa.com/knowb.../aa_bb9167.htm
Smilies and attachments both are working for everyone. When replying to a thread, click the blue Post Reply button. From there, you will see a link that says [More] under smilies. Click on that to open a new window that shows you all the smilies.
For attachments, click the Manage Attachments button, and a new window will open up for you to upload attachments to YorkieTalk. For some browsers that have popup blockers installed, you may need to hold down the CTRL button or SHIFT button on your keyboard before you click on the link.