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My e-mail comes up, but no folders on the side under the in box. On bottom right a message comes up saying Client Bug command is not operating in this state. I have updated the Mozilla and It started working again. The next few minutes I tried again and it doesn't work. It goes off for a few days and then it works one or two times then it goes off again. It is now off and I am using a nother e-mail supplier. I want to use Mozilla

Some body please find an answer for me

Thanks

From Mozillazine:

The folder pane is the pane at the left. It normally lists your accounts and folders. The thread pane on the right normally lists the contents of the folder. If the folder pane is shown but is empty, see Empty folder pane.

If you don't see a folder pane it is probably because you inadvertently closed (collapsed) it (Bug 340982). To bring it back, just move your cursor to the far left side of the window until the cursor changes into a double-headed arrow (↔), and then drag the splitter bar to the right. [...]

Can you confirm if either of the above match your problem?