500 Internal Server Error

• Most likely your permissions are incorrect. CHMOD every file and folder to 644. Then follow the installation instructions.
• Try deleting the .htaccess file.

404 error

• You probably missed a file. Try uploading all the files again.

403 error

• Your server may have trouble with the .htaccess file (we don't know why). Delete that from the server and try again.

The main page loads, but all the links are incorrect

• Make sure mod_rewrite is turned on (Apache web server).
• Make sure your server is configured to allow access to the .htaccess file in the Pligg directory.
• Make sure your .htaccess file is set up for your Pligg install directory. If you installed to root, you don't need any changes. However, if you installed to a subdirectory, change the fourth line of htaccess from "RewriteBase /" to "RewriteBase /your_Pligg_subdirectory"