Please update your plugins:

• https://www.mozilla.org/en-US/plugincheck/

• What to do if Firefox won't play any sounds

guigs2 said

Please update your plugins:

• https://www.mozilla.org/en-US/plugincheck/

• What to do if Firefox won't play any sounds

Sorry, but I updated all my plugins, but it didn't work.

Please provide your Crash Report ID#'s.

1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

bp-1123009e-442c-446c-a821-850d92150520

bp-58387883-aa18-4c2a-8449-f35032150520

bp-d9c9b627-c4ab-4ac2-9b65-dc1122150518

There you go, hope it helps.

Those 3 crashes were caused by something named mcmpgdec.dll, which is related the MainConcept MPEG Stream Decoder.

I not sure if that file is related to one of these Plugins that you have installed or which one. -VLC media player Web Plugin -WildTangent Games App V2 Presence Detector -iTunes Detector Plug-in

My advice is disable each of those plugins one at a time to see which one is using that DLL file.

the-edmeister said

Those 3 crashes were caused by something named mcmpgdec.dll, which is related the MainConcept MPEG Stream Decoder. I not sure if that file is related to one of these Plugins that you have installed or which one. -VLC media player Web Plugin -WildTangent Games App V2 Presence Detector -iTunes Detector Plug-in My advice is disable each of those plugins one at a time to see which one is using that DLL file.

Sorry, I disabled all of them and the problem still persisted.

the-edmeister said

Those 3 crashes were caused by something named mcmpgdec.dll, which is related the MainConcept MPEG Stream Decoder. I not sure if that file is related to one of these Plugins that you have installed or which one. -VLC media player Web Plugin -WildTangent Games App V2 Presence Detector -iTunes Detector Plug-in My advice is disable each of those plugins one at a time to see which one is using that DLL file.

Here's the code for the latest crash: bp-2d26799a-d4f1-40e3-bef9-25cf12150523

Same cause for that crash - mcmpgdec.dll .

Sorry, that's all I have for you.

• Firefox 38.0.1 Crash Report [@ mcmpgdec.dll@0x5ac28 ]

What is the installation path of the mcmpgdec.dll file if you search for this file?

That would tell you what software is causing this issue.

cor-el said

• Firefox 38.0.1 Crash Report [@ mcmpgdec.dll@0x5ac28 ]

What is the installation path of the mcmpgdec.dll file if you search for this file? That would tell you what software is causing this issue.

I found the file and deleted it, but now it's no longer crashing just not playing the sounds. Should I go and delete the program it was attached to entirely?

Oh wait, I fixed it.