In the front end calendar, there is a bug with the links to Milestones. Links to To-dos work correctly because the link format is “www.mywebsite.com/project/?project_id=301…” Links to Milestones do not work because the link structure is wrong. Notice the “/calendar/” in “www.mywebsite.com/calendar/?project_id=301…” Can you please correct and let me know where the fix must be made in the code? Thanks!
Just solved the problem, please wait for next release. If you don't want to wait for next release then go to line number 191 in urls.php of Project manager frontend addon
and replace the following function..