I have the same problem.  Do you Dell guys have a solution to this annoying message?  I have a xps 1210.  Why is this message popping up?  Otherwise, my Vista is functioning ok but I am sure future compatabiltiy issues will come along as we worked out the bugs.

I purchased the Vista Ultimate edition and upgraded my Inspiron 9400 from XP Home edition. Now I get this error message 'Error loading CTMBHA.DLL Invalid access to memory location' after every boot.

I am also experiencing extremely slow internet browsing with iexplorer utilising 60 -100% CPU.

 

I recently upgraded to Windows Vista Home Premium. Just purchase my notebook not even a month old now receiving the error message CTMBHA.DLL Invalid access to memory location. Chat with an Dell Support online did not get the help needed. Dell we need help! Can anyone help?

Since upgrading all of Dell's latest drivers and still having this error, I have removed the line from my registry for this DLL and (as expected) the driver no longer causes an error.

 

I still have sound and have not run into any further problem since removing the driver.

If I am remembering correctly that is for the Sound Blaster software that unlocks all of the extra features of the onboard sound card. That software is not Vista compatable and from what I understand there is no plan to do an upgrade for it. I have that for my XPS 410 but uninstalled it and purchased the Creative X-Fi for my computer. I have not yet upgraded to Vista but there are at least Beta drivers for it and the final drivers should be released soon.