how show posts in category?

Wordpress. posts do not show up after clicking categories. Error 404?

• Hi! Posts wont show up after clicking Categories both on the top as well as the side panel. I'm using revolution lifestyle theme 1.0. I also have this plugins: akismet, bsuite, category posts widget (activated but not using the widget), the excerpt reloaded and scriblio. I was experimenting on some plugins but had them removed/deleted. My categories are working fine before but now it wont show any posts. I get this error: NOT FOUND, ERROR 404. I tried to change my theme to the default wordpress theme. Categories worked but when I switched back to revo lifestyle, categories wont show posts again. What should I do. I'm not so techie.

• Answer:

  Without your URL it's impossible to know what you have broken so here is my advice. If you have not made any changes to the theme files since installing the theme, just uninstall and re-install the theme from your WP-admin. Be careful though because if you have customized any of the files manually you will lose all those changes by overwriting the theme files. If you're unsure, make backup copies of all your theme files beforehand by downloading them from your server to your hard drive (you will find theme files in wp-content/themes- that way if the uninstall or re-install causes more problems you can go back to what you started out with. If this doesn't work, take your question over to the Wordpress forums, post your problem there along with your website URL and hopefully someone will be able to help you out. http://wordpress.org/support/