What Is Ctmbha.dll?

Use
The file allows your computer to access Creative Labs audio features, including the specialized sound mixer, equalizer and speaker settings. With this error, you may find these features do not work properly.
Troubleshooting
This file may become broken if you have modified or removed the Creative entry in your registry. In addition, the file may come up as missing or broken if the Creative drivers are out of date or are the wrong ones for your computer.
Repair
It's easiest to reinstall the drivers and see if that fixes the problem; in most cases, this repairs any damaged or corrupted files. In addition, you may try to access the Creative Labs License folder (under C:\Documents and Settings\All Users\Application Data\Creative Labs\Licenses) and rename the file 'B3420000.dat' to 'B3420000.dat.old' before reinstalling.