Sure – take a look at the following thread:
Help! Problem Is Definitely My Theme – What Now?
It’s relevant because you have an older version of jQuery running on your site; there may also be another Javascript related problem at play here so I’d suggest running through our complete troubleshooting steps:
1. Switch to a default, unmodified theme such as Twenty Twelve.
2. Please also deactivate all other plugins except for The Events Calendar and Events Calendar PRO – and make sure both of those are at version 2.0.11 (you can check this by visiting the Plugins admin page).
3. Now visit your calendar page and see if the problem has been fixed.
4. Assuming it has, please reactivate each plugin and then your theme one-at-a-time, testing every time you reactivate something to see if the problem has returned.
This, hopefully, will isolate the problem to either your theme or one of your plugins (or perhaps a combination of some of those) and we can then take things from there.