Please help: Articles and Categories can not displayed / edit

Hi all

This is my first post. I installed community edition few days ago and sucessfully activated paypal yesterday. Today I signed as administrator and I can not see any categories or articles (though I can still login as a customer, display articles and buy them) If I add a new category or article, it is added but I can not display/edit them.

I will be thankful, if you could kindly suggest me what I should do?

Thanks
Konda Reddy

After installing Tools like Paypal you have to generate the views for the table-layouts new.
You can find that under: Admin > Service > Tools