Latest Page Builder update has wrecked my homepage

I just installed the latest Page Builder update but unfortunately it has totally wrecked the layout of my homepage, which is built using widgets from a Genesis based (which I had also updated to the latest version) Outreach Pro theme.

All my internal pages are fine, but the homepage layout has been completely wrecked.

The homepage looks fine when I deactivate Page Builder, but all the internal pages are then wrecked instead.

How do I get hold of an older version of the plugin, so that I can get my homepage back to the way it was?

Thanks