I have created a Wordpress site, it's very ok on Localhost but has problems when runs on live host.
After uploading Wordpress site's folder and database, everything was ok.
But the problems happened in the first time accessing the plugins page in wp-admin there were some lines “The plugin ........... has been deactivated due to an error: The plugin does not have a valid header.” Then all plugins didn't work anymore :(
And in "appearance/themes", the information of themes was just " by anonymous".
I've tried to upload a new fresh Wordpress and database, but the problems still happened.
Sorry for my bad English and thanks for any help!