Hi. Opera on my Mac has just exhibited a perhaps similar pattern after successful use for some time (not aware of any upgrade having taken place): I go to a web page, eg facebook, the page flashes up for a second,it appears to reload, and then it reverts to all white. So this seems to be happeining certainly at facebook.com and theguardian.com. However I've found a couple of sites render OK - google analytics and google search for example. Not experiemented further as had to switch to alternative browers.
Could you clarify how to try with a clean profile please? What does "just use Apple paths and Finder" mean? Currently under Paths I have:
Profile: /Users/my user name/Library/Application Support/com.operasoftware.Opera
Cache: /Users/my user name/Library/Caches/com.operasoftware.Opera
What specifically do I need to change with this please?
I have also tried clearing cache and cookies.
I am using Opera Version: 37.0.2178.54 - Opera is up to date
System: Mac OS X 10.8.5 64-bit
Thanks for any assistance.