"command length is incorrect" error popping up

[Aaron Solochek]

Running the latest samba4 from git, I'm seeing the error "The program
issued a command but the command length is incorrect" in a few different
places.

For instance, when I open the group policy management program on a
windows 7 client, it immediately pops that error up (although I'm still
able to change group policy fine, as best I can tell)

But the place this is really bothering me is that it seems to be
breaking my roaming profiles.  The event viewer shows:

> Windows cannot locate the server copy of your roaming profile and is
> attempting to log you on with your local profile. Changes to the
> profile will not be copied to the server when you log off. This error
> may be caused by network problems or insufficient security rights.
> 
> DETAIL - The program issued a command but the command length is
> incorrect.

Anyone know what is causing this and how I can fix it?

Thanks.

-Aaron