Thread:Extension talk:Update/Parse error: syntax error

Very good extension, I love the idea. However having problem.

Going to mywebsite.org works mywebsite.org/wiki/Special:Version gives me this error below

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/.............../extensions/Update/Update.Update.php on line 156

Going to mywebsite.org/wiki/Special:Update gives me this error below

Warning: Call-time pass-by-reference has been deprecated in /home/..................../extensions/Update/Update.SpecialUpdate.php on line 100

Warning: Call-time pass-by-reference has been deprecated in /home/.................../extensions/Update/Update.SpecialUpdate.php on line 115

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/............./extensions/Update/Update.Update.php on line 156

on MW 1.17, semantic mediawiki Is this a bug, or some setting I am missing. Thanks for the help.