hi irene1514, 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.

bp-d9512e1f-7ce6-44d6-8731-469852150702 7/2/2015 10:06 AM bp-001fc0cc-3793-47eb-9833-2921d2150701 7/1/2015 6:58 PM bp-2457e2ec-dd99-4772-b3fe-3a1562150630 6/30/2015 4:38 PM bp-c2266b31-52be-4a87-96ca-7be552150630 6/30/2015 2:46 PM bp-5013c733-71ab-4bdd-be76-417012150630 6/30/2015 1:01 PM bp-05277972-c915-484c-91c8-e79e62150626 6/26/2015 6:14 PM bp-a6eef11a-53de-4454-afa6-07ed62150625 6/25/2015 7:43 PM 499e0853-f00d-42d5-aeb7-8998961e47cb 6/25/2015 6:55 PM bp-7fc9641a-4f90-496e-a60e-fd4982150625 6/25/2015 4:18 PM bp-65cf47e1-90d6-442c-a0d5-2f91c2150625 6/25/2015 9:37 AM bp-b510eda2-9725-479a-823f-dac6c2150622 6/22/2015 2:15 PM

thank you for following up with the report ids - unfortunately these crashes are all triggered by the external Trend Micro Browser Exploit Prevention software which is hooking into the browser but doesn't seem to behave nice. please see if there's an update available for that program that you can install or else uninstall it for the moment and contact Trend Micro's support about that issue...

Thank you Philipp I contacted Trend Micro and they had me disable it for now. I guess they will have me enable when they have it fixed. Appreciate the quick response from you and hope this works for now Have a great day and appreciate it