I installed opera-stable which runs just fine
opera-stable_41.0.2353.56_amd64.deb
I also totally removed opera-developer and reinstalled then when I launched it
confirmed the Ad Block preference is OFF ... still crashes
opera-developer_43.0.2412.0_amd64.deb
Also I just installed opera-beta which also crashes same as opera-developer crashes
opera-beta_42.0.2393.38_amd64.deb
[52047.182549] BrowserBlocking[5601]: segfault at 0 ip 0000000003b3e5c6 sp 00007f7ac2599660 error 4 in opera-beta[400000+5aca000]
[52091.614312] BrowserBlocking[6112]: segfault at 0 ip 0000000003b3e5c6 sp 00007f51bd450660 error 4 in opera-beta[400000+5aca000]
[52123.453484] BrowserBlocking[6193]: segfault at 0 ip 0000000003b3e5c6 sp 00007f8a2a3ac660 error 4 in opera-beta[400000+5aca000]
[52128.895953] opera-beta[6392]: segfault at 0 ip 0000000003b3e5c6 sp 00007fff8107cfc0 error 4 in opera-beta[400000+5aca000]
Looks like I will just lay low and stay away from beta and developer releases for now