Incompatible plugins
Move the plugin folder under the location ~user/wp-includes/plugin - > plugin.bak and try.
Incorrect .htaccess file contents
mv the .htaccess file under ~user/public_html/.htaccess -> .htaccess.bak and try.
PHP running out of memory
Find the PHP.INI and increase the memory limit.
Incorrect file permissions
For suPHP, file default permission should be 644 and folder 755. Go to ~user/public_html and execute the below command
find . -type f -exec chmod 644 {} \;
find . -type d -exec chmod 755 {} \;
Not using PHP5
Change the php version of the domain and try. You can refer the below URL to change the PHP custom compilation,
http://techmesrv.weebly.com/custom-php-compilation.html
Move the plugin folder under the location ~user/wp-includes/plugin - > plugin.bak and try.
Incorrect .htaccess file contents
mv the .htaccess file under ~user/public_html/.htaccess -> .htaccess.bak and try.
PHP running out of memory
Find the PHP.INI and increase the memory limit.
Incorrect file permissions
For suPHP, file default permission should be 644 and folder 755. Go to ~user/public_html and execute the below command
find . -type f -exec chmod 644 {} \;
find . -type d -exec chmod 755 {} \;
Not using PHP5
Change the php version of the domain and try. You can refer the below URL to change the PHP custom compilation,
http://techmesrv.weebly.com/custom-php-compilation.html