Hypercam 3.5 fails to start with audio driver

Hello,
When I try to record with my microphone using Hypercam 3.5, I get this error. My audio driver is up to date and I have the latest version of the program and that should be enough. Any solution for this error ? What this error means ?
Thanks !

Error!
Error , building audio graph failed
( unspecified error hr = 0x80004005)
