SOLVED: Fluid site-specific browser in 10.10.2

Hi,
I've used Todd Ditchendorf's Fluid App to generate a site-specific browser for gmail for a few years. Worked great until recently. With the last two public betas and the final release of 10.10.2 it frequently locks up after performing just one function like opening an email. The only way to "re-activate" it is to right click and reload the page. Then it may do one or two functions before locking up again.

Anyone have any ideas?? I sent an email to the support email address almost a month ago but have heard nothing.

Thanks.

Update:
Git an email from Todd's support that told me to enter the Main dropdown menu (the one to the left of File in the top menubar and change the 'UserAgent' to Safari. Worked great & solved the issue.