See if there are ant crash reports.

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP in front of the numbers/letters, click it and select Submit.

Using your mouse, mark the most resent 7 - 10 crash reports, and copy them. Now go to the reply box below and paste them in.

check this:

• see if there are updates for your graphics drive drivers

https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

• disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)

https://forums.adobe.com/message/4468493#TemporaryWorkaround

• disable hardware acceleration in the Flash plugin

https://forums.adobe.com/thread/891337 See also:

• http://kb.mozillazine.org/Flash#Troubleshooting

06902697-347E-4CCE-A5DE-3BA5B7E904AA 2015-09-07 9:07 PM 60E7207F-8815-454C-8F62-E51B694D5247 2015-09-05 5:50 PM 74600E30-0496-40F6-A275-FE026BF175EF 2015-09-05 12:47 PM 5AD8533A-2105-4C73-B7B8-65C98CE69B74 2015-09-02 10:33 AM 575AD40A-5E4C-4B51-B398-0E2B7081215D 2015-09-01 7:46 PM F8BB9928-DD63-4300-AB55-3234EF08BD0F 2015-08-31 11:39 PM 31EA4E40-3F2A-4169-8B21-9336938BD0BC 2015-08-29 8:51 PM 096BD99D-28E6-4978-8A93-571C98598919 2015-08-29 3:14 PM 90A06D58-3801-4CF0-95D0-B7045BEAAC44 2015-08-29 1:20 PM 223B86F7-596F-4DD3-BF91-7059635CAAE3 2015-03-31 9:52 AM

I'd also like to add that I'm using mac 10.10.5.

Please click on each of those Crash Reports from the last few weeks to submit each of them to the Mozilla Crash Reports submission server manually and make sure the BP- prefix is added. For some strange reason none of those crash reports were submitted.

Sorry, I misunderstood your directions. Below are the report IDs after I've clicked on them.

bp-4e1d7657-7e4d-4445-9817-644942150908 2015-09-08 12:16 AM bp-b3e1427d-c8ca-4693-a9ac-3345a2150908 2015-09-08 12:16 AM bp-2e604bc1-5ec6-4b35-901d-63e6c2150908 2015-09-08 12:16 AM bp-9ccb6ac6-a7e0-47b1-a7d0-900db2150908 2015-09-08 12:16 AM bp-5d68839b-94ac-4de5-b63f-976f52150908 2015-09-08 12:16 AM bp-d46c0680-2933-49ad-ae03-2ed082150908 2015-09-08 12:16 AM bp-d91748d2-4714-4c90-be4d-3053a2150908 2015-09-08 12:15 AM bp-c6eba9f2-637a-4b1d-972d-6608e2150908 2015-09-08 12:15 AM bp-5acfec31-c5f6-4d0c-9f4a-6e2b72150908 2015-09-08 12:14 AM bp-8bb7ca77-2f1a-4880-a0c9-5db452150908 2015-09-08 12:07 AM

Signature hang | libsystem_kernel.dylib

Process Type plugin Shockwave Flash Version:18.0.0.232

FlashPlayer-10.6

libsystem_pthread.dylib =  ? Word for Mac

CoreFoundation

AppKit

libsystem_kernel.dylib =  ? Word for Mac

For some time now, a lot of Mac’s with Microsoft programs have been crashing. Check with Microsoft / Mac support sites.

Are you saying that Microsoft programs I have installed on Mac are somehow causing Adobe Flash to crash whenever it runs on Firefox?

Could you elaborate on this a little more because I don't understand. How could Microsoft programs interfere with Adobe Flash? And if this is true, how come Adobe Flash works perfectly fine on other browsers I use on Mac (safari and chrome).

Thanks in advance.

I do not know if flash is the problem, or the victim, All I can add is what I said above about Mac and Microsoft.

As a test, download the current full installers for your Microsoft programs and save them. After, un-install those programs. Then reboot.

Is there any problem without Microsoft? Later, run the installer and try again.