404 Category not found error

Installed mobile joomla 1.0 RC4 on our 1.6 site and configured it easily. However, regardless of what type of mobile device, all we see is the error:

404 - category not found


Anyone know the remedy?

I have installed this component into our 1.5.25 site and i am getting a redirection to Earthlink 404 page on my phone which is android and BB is having the same problem. Can any one help