Yeah it broke the NPAPI plugin. I also have an older Foscam that is no longer supported by firmware updates.
Here's what I did: Downloaded a version of 36, unplugged the network cable (so it wouldn't auto-update after installing), installed 36 as a stand-alone/USB on my data drive (as opposed to my OS drive where the updated 37 is installed), closed it and renamed the opera_autoupdate.exe to opera_autoupdate.lexe.
I now use that install just for the camera.