I believe this is a zpmasonry theme error as I do not get these errors when I use any of the other themes (default, zenpage, effervescence, etc.) I have clean install of ZP 1.404 and zpMasonry 1.41 with new database.
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Warning: file_get_contents() [function.file-get-contents]: URL file-access is disabled in the server configuration in /home/content/n/a/t/naturalenq/html/testgallery/themes/zpmasonry_v1.4.1/functions.php on line 136
Warning: file_get_contents(http://tinyurl.com/api-create.php?url=http%3A%2F%2Fnatureinfocus.com%2Ftestgallery) [function.file-get-contents]: failed to open stream: no suitable wrapper could be found in /home/content/n/a/t/naturalenq/html/testgallery/themes/zpmasonry_v1.4.1/functions.php on line 136
Warning: Cannot modify header information - headers already sent by (output started at /home/content/n/a/t/naturalenq/html/testgallery/themes/zpmasonry_v1.4.1/functions.php:136) in /home/content/n/a/t/naturalenq/html/testgallery/index.php on line 164
Warning: Cannot modify header information - headers already sent by (output started at /home/content/n/a/t/naturalenq/html/testgallery/themes/zpmasonry_v1.4.1/functions.php:136) in /home/content/n/a/t/naturalenq/html/testgallery/index.php on line 165
Warning: Cannot modify header information - headers already sent by (output started at /home/content/n/a/t/naturalenq/html/testgallery/themes/zpmasonry_v1.4.1/functions.php:136) in /home/content/n/a/t/naturalenq/html/testgallery/index.php on line 166
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There is indeed a PHP setting for allow url fopen. That is what is preventing opening the offsite link via the filesystem open function. Not at all sure of why that theme is doing a file open on an URL, but [b]most[/b] hosting providers have that setting so that the open is not allowed.
Of course the plugin if for the SITE to tweet, not for a visitor to tweet the SITE page.
If all you are doing is putting a tweet button on the page it should be possible to do without the fopen(): https://twitter.com/goodies/tweetbutton