I can't read offline and any messages on screen, and can't send messages too.

Dear Friend,

Please download latest version of Yahoo Messenger....... and use following instructions -

Click the Messenger menu in Messenger.

1. Select Preferences.
2. Click the Archive category.
3. Check the Enable Archiving option. Enable each item that you want to archive. If you'd like to automatically delete archives after a certain number of days, place a check in the box next to Automatically Delete Files Older Than and enter a number.
4. Click OK at the bottom of the window.

1. Click the Contacts menu in Messenger.
2. Select Message Archive.
3. A new window called Message Archive for {your ID} should appear.
4. Select the archive folder you want to review.

1. Click the Contacts menu in Messenger.
2. Select Message Archive.
3. A new window called Message Archive for {your ID} should appear.
4. Select the Messages folder and then click the X button if you want to delete your complete Message Archive or select the desired folder and then click X to selectively delete.

• Under the Message menu, you can reply, save, and print messages, as well as view your archiving preferences.
• Under the Edit menu, you can copy messages to your clipboard or delete messages.
• Under the View menu, you can enable timestamps.