Upgrade from 2.7.1 to 2.8.1 – now have plugin conflict and styling issues

I have a site where everything was working just fine on 2.7.1

I upgraded the enfold theme from 2.7.1. to 2.8.1 and now have some styling issues that weren’t there previously.

I have narrowed it down to the Form Lightbox plugin (http://wordpress.org/plugins/form-lightbox/) – which is used extensively across the site and never had any problems in 2.7.1

Specific things like:
– images now only align left (which doesn’t look pretty when they are meant to be elsewhere)
– contact forms when fields in 1/2 still go to a new line (ie underneath each other instead of side by side)
– margins / spacing around buttons and images are incorrect (ie too small – not obeying the css styling).

I have had to revert back to 2.7.1 for now so things display correctly on the site.

Any insight would be greatly appreciated.

Thanks!