I opened this thread as no one else seems to be experiencing what I am experiencing. Essentially, as the title suggests, any Opera version, whether Stable, Beta, or Developer, beyond version 35 does not work for me. I receive a Page crashed error on every tab, even if I try to go to Settings or About. I have done numerous clean installs, checked for malware/viruses, and can only conclude that it is some problem my computer has with version 35, as version 34 works.
Previously I had used Opera Beta, and when that was updated to 35, I had this error. No problem I thought, I'd just go back down to Standard. But now, the in-built auto-updating feature of Opera prevents me from using any Opera build now that version 35 rolled out to Stable editions a few days ago. I have tried the Developer v36, but it also yields the same result. I have since decided to move on to another browser, but I would still be glad to help provide any information that can help the team resolve the issue if possible.