I'm not sure this is a bug but here's what I got upon install.
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in /home/mybhak5/public_html/mod/tasks/lib.php on line 39
and here's what I did to fix it on line 39:
// global page_owner();
global $page_owner;
Keywords: /mod/tasks/lib.php, expecting T_VARIABLE or '$' in, line 39, Parse error: syntax error, tasks, tasks plugin, unexpected T_STRING