Some of the users are unable to connect to TweetDeck with the API. It appears that the problem comes from a non-enabled function on the servers - apache_request_headers() You need to have the function enabled in order to use the API to connect to TweetDeck. Here is a simple test method to verify whether the function is enabled on your server or no:
if( !function_exists('apache_request_headers') ) {
echo 'bad';
}else echo 'good';
If the result is "bad" then your server doesn't support apache_request_headers(), if it is "good" you should be able to connect to TweetDeck.
This will be changed in Sharetronix 1.5.1.