WP HUMMINGBIRD PROBLEM with ACTIVATION

Hi there, another problem with plugin, when activating WP HUMMINGBIRD got "Server error status: Internal Server Error [500]"
Not really nice beginning with WPMU DEV ..
(another ticket about Defender activating problem posted ...)
got this message:
"Plugin could not be activated because it triggered a fatal error.
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /home1/lukasz16/public_html/purefinalsite/wp-content/plugins/wp-hummingbird/core/modules/class-module-minify.php on line 526"