upload to idea library got 500 error

upload to idea library got 500 error. in fact I had same problem with phpBB so its not wp or phpbb its the server anyone know what could cause this error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@bloginsphere.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
TimmiT HTTPD Server powered by Apache mod_fcgid/2.3.6 Server at bloginsphere.com Port 80

I checked the error log for the wp account that shared with a Link Directory (phpLD) heres a few lines of errors

[Thu Jul 21 22:02:37 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Fatal error:  Call to undefined function _e() in /home/xxxxxx/public_html/wp-content/plugins/wpmu-dev-facebook/lib/forms/widget_pack_settings.php on line 2
[Thu Jul 21 21:26:20 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Fatal error:  Call to undefined function _e() in /home/xxxxxx/public_html/wp-content/plugins/wpmu-dev-facebook/lib/forms/shortcodes_info.php on line 3
[Thu Jul 21 20:50:16 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Fatal error:  Call to undefined function add_action() in /home/bloginsp/public_html/wp-content/plugins/wpmu-dev-facebook/wpmu-dev-facebook.php on line 31
[Thu Jul 21 17:32:56 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Warning:  Smarty error: unable to read resource: "widget_central_bot.tpl" in /home/xxxxxx/public_html/directory/libs/smarty/Smarty.class.php on line 1113, referer: http://directory.xxxxxx.com/detail/create-a-blog-free-with-xxxxxx-1.html
[Thu Jul 21 17:32:56 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Warning:  Smarty error: unable to read resource: "widget_central_bot.tpl" in /home/xxxxxx/public_html/directory/libs/smarty/Smarty.class.php on line 1113, referer: http://directory.xxxxxx.com/detail/create-a-blog-free-with-xxxxxx-1.html
[Thu Jul 21 17:32:53 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Warning:  Smarty error: unable to read resource: "widget_central_bot.tpl" in /home/xxxxxx/public_html/directory/libs/smarty/Smarty.class.php on line 1113, referer: http://directory.xxxxxx.com/detail/create-a-blog-free-with-xxxxxx-1.html
[Thu Jul 21 17:32:53 2011] [warn] [client xxx.xxx.xxx.xxx] mod_fcgid: stderr: PHP Warning:  Smarty error: unable to read resource: "widget_central_bot.tpl" in /home/xxxxxx/public_html/directory/libs/smarty/Smarty.class.php on line 1113, referer: http://directory.xxxxxx.com/detail/create-a-blog-free-with-xxxxxx-1.html

one of them happens to be facebook plugin. Did not see 500 errors

also I have nginx as a front end proxy using the cpanel one.