Yacscom.dll Crash When Entering Room

[sholling]

First up I'm new here but not new to forums. I'd like to thank everyone that reads this in advance for their time and assure you that I read the FAQ and ran several searches for similar threads.

I have been fighting a problem in Yahoo Messenger for over a year and I'm stumped. The first 3-5 times I try to enter a chat room yahoo crashes with the message below. It started with a clean install of Vista 32 Ultimate when I built this PC and I figured I'd live with it until Windows 7. Well I did a clean slate install of Windows 7 64bit and and a clean install of Messanger 9.0.0.2152 I still get the exact same error 3-5 times before I successfully enter a room. The only way around it seems to be renaming yacscom.dll and doing without voice.

I'm running a Core 2 Quad in a Gigabyte GA-X38-DQ6 MB with 6GB of RAM. All windows patches and drivers are up to date and my AV is NOD32. Any ideas? Is there a known issue with the ALC889A onboard audio?

TIA!!!

Exception code: C0000005
Exception address: 605CB2C1

CPU Registers:
--------------
EAX=6FD58E75 EBX=00000000 ECX=096F1D30 EDX=00000000
EDI=0000040F ESI=096F1D30 EBP=0DFAFC6C EIP=605CB2C1

Stack Trace:
------------

0x605C0000:0x605CB2C1 ! yacscom.dll [1.0.0.50]
0x605C0000:0x605D0C61 ! yacscom.dll [1.0.0.50]
0x00000000:0x0DFAFD70 ! Unknown
0x00000000:0x8DC93300 ! Unknown

[Yahooligan]

Greeting Sholling, and welcome to the BigBlueBall!

That exception code is an access violation - basically something in the process is trying to read memory it does not have access to.

It can also be a sign of bad RAM. Before doing too much troubleshooting test the RAM.

Memtest86+ - Advanced Memory Diagnostic Tool

Let it run for at least 3 or 4 hours.

[sholling]

Thank you for the welcome and the suggestion. Per your advice I ran MemTest86 for about 8 hours last night - 5 complete passes. It found no errors. I'm running my system with some fairly conservative settings - well below the RAM's factory rated speeds. All drivers are up to date and as I said this continued even after a clean slate OS upgrade. Sound works fine for everything else but Yahoo Messenger.

[Dermot]

1) you should be using latest Messanger ( Yahoo! Messenger - Chat, Instant message, SMS, Video Call, PC Calls )

2) Since you have a 64bit system make sure wow64 is handling the YIM executable (yahoo messenger 10 should be handled fine)

3) Have you ran messenger as admin to see if you get the same access violation?

[sholling]

Originally Posted by Dermot

1) you should be using latest Messanger ( Yahoo! Messenger - Chat, Instant message, SMS, Video Call, PC Calls )

2) Since you have a 64bit system make sure wow64 is handling the YIM executable (yahoo messenger 10 should be handled fine)

3) Have you ran messenger as admin to see if you get the same access violation?

Thanks for your help. I've upgraded from 9x to the latest version of 10 I still get the same error. With a change in yahoo versions and operating systems it almost has to to an audio chipset incompatability. I cant think of anything else.