Script Error while trying to load a team

I am receiving the script error “A script on this page may be busy or no longer responds. You can now stop or continue the script to see if the script is finished.” while trying to open a team page to edit. The page keeps freezing in the loading process. I think it has something to do with the script “jquery-linedtextarea.js”. If i delete this script, the page loads, but i can’t edit the styles anymore. When i upload it again, i get the script error.

Can you please help me with this issue?

Thanks for your reply.
Trevor

The page I need help with: [log in to see the link]