I installed the last version (2.06) and when I tried to activate tokens on a survey (Token management -> Initialise tokens) I got a blank page. For addressing the issue, I changed the application/config/config.php file, setting the debug level to 1 and I got the following error:
Parse error: syntax error, unexpected '[' in /var/www/www.ittig.cnr.it/fabri/limesurvey/application/models/Token.php on line 209