How do I stop .cpp errors on opening firefox

Question

when I open firefox I get a series of message boxes as follows:
353 regWithoutKeyname.cpp
49 dfxpRecord.cpp
234 dfxpInit.cpp
65 dfxpUniversal.cpp
86 winmmDfx.cpp
The number is the title of the box and the text is the file name. An OK button appears in each box and once pressed the next box appears.
How do I stop this from occurring ?

Answer 1

'''How to stop Firefox startup .cpp error dialog windows''':
* 353 ..\..\UTIL\reg\regWithoutKeyname.cpp
* 49 .\dfxp\dfxpRecord.cpp
* 234 .\dfxp\dfxpInit.cpp
* 65 \dfxp\dfxpUniversal.cpp
* 86 .\winmmDfx.cpp
'''It has nothing to do really with Firefox or plug-ins!'''
It happens in safe-mode as well. I also experienced the same problem in IE.
'''It is an Audio related problem'''
To my astonishment I could not find an answer anywhere until I realized that once upon a time I had installed DFX Audio Enhancer!
'''You have most likely [http://www.fxsound.com/index.php?vendor=23&subvendor=1&plus=2&refer=dfx11 DFX Audio Enhancer] installed''' and corrupted. Possibly due to a a deep registry clean scan which removed some keys.
'''''Simply reinstall DFX Audio Enhancer and you problem is solved!'''''
Fire fox error messages