Parse error when adding WPMU plugings

Today I added WPMU Dev Dashboard to one of my sites, and added the plugins Support System and Integrated Video Tutorials. Now I have the following error:

Parse error: syntax error, unexpected T_FUNCTION, expecting ‘:wink:’ in /home3/litbreak/public_html/v2litbreaker/wp-content/plugins/incsub-support/inc/classes/class-shortcodes.php on line 69

I can’t really move anywhere in the site due to the error. So I can’t disable the plugins. What shall I do?