[arch-general] vboxnetflt module broken in virtualbox-host-modules-lts?

I'm running the LTS kernel, and VirtualBox has been working fine under it until recently. However sometime in the last few days (after a recent upgrade, I'm guessing), I can no longer launch VM's. Apparently vboxnetflt is never getting loaded. And when I try to load it manually, I get the following error: [darose@daroselin ~]$ sudo modprobe vboxnetflt modprobe: ERROR: could not insert 'vboxnetflt': Invalid argument Anyone know what the problem might be? I didn't see any bug reports about this. Does the virtualbox-host-modules-lts need to be upgraded perhaps? Thanks, DR