403 - for freelinking module

I realy like this module - and started to use it. In a couple of days my access denied error log started to grow. I use the freelink module and evrything in the "freelink"-path gave a 403 error for any anonymous user. There were no reson - the freelink module have been working for over a year. If i turned the menu_per_role off it started to work. How can this module give such an effect?