I have drilled down to this error:
Error: Syntax error, unrecognized expression: #projects_tax .right .p, #tasks_tax .right .p,
https://192.168.251.119/wp-includes/js/jquery/jquery.js?ver=1.8.3
Line 2
I get this error whenever I browse to the ajax event calendar and have GTM activated. When GTM is NOT activated, I do not get this error and everything works correctly.
Thanks Mark.