hello, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply. this will give us a better understanding what may be triggering those crashes.

you'll find the 64bit download link for devedition on the page for all systems & versions: https://www.mozilla.org/en-US/firefox/developer/all/

The Aurora (developers edition) and the more unstable Nightly channel builds gets checkins almost everyday so they get a update each of those days. This can sometimes lead to issues until fixed, finished, or reverted.

Release < Beta (b#) < Aurora (a2) < Nightly (a1)

A number of Testers hang out at http://forums.mozillazine.org/viewforum.php?f=23 though more are Nightly users vs Aurora.

Here are the latest submitted crash reports -- note the high frequency that this is happening: bp-aa96d703-1f9e-4563-b9f4-498872161125 11/24/16 10:15 PM bp-2287eb3a-de3a-4142-9a9c-105d62161125 11/24/16 10:14 PM bp-b5374a1c-006b-4a6f-9155-30c622161125 11/24/16 9:59 PM bp-2b3fba55-8422-4ded-a546-4dc212161125 11/24/16 9:55 PM bp-0db69553-1264-4d91-b8cc-51c1e2161123 11/23/16 5:37 AM bp-fe8a8c08-5262-4470-b7b1-1f05b2161123 11/23/16 5:01 AM bp-abaf9ca8-9ff0-4bac-bba4-aafc02161123 11/23/16 4:54 AM

Just uninstalled 32-bit version and installed 64-bit version. Still getting tab crashes with the above message.

Thank you all for your assistance -- any insight would be greatly appreciated, this is driving me crazy.

hi again park2tell, thanks for providing some reports. unfortunately this is currently a known crashing issue on developer edition - mozilla's engineers are already on it and working on a fix, please check for available updates regularly.

Thanks -- yeah, this seemed too epic not to be a known bug. Does vanilla FF also have this issue or just the Dev Ed?

should only have been on devedition & nightly till now - can you check if the problem still reproduces in today's 52.0a2 build?