Hi, this is Kentaro, an author of EffecTV. You could post your question to EffecTV mailing list, it is subscribers-only but we can read all of non-member' post. Anyway, as Marvin described, some typical mistakes are known. Let me follow Marvin's list. C.) Do not forget to create device files. D.) Apply a patch included in EffecTV source package to vloopback. Some bugs are found in vloopback-0.90 and they are not fixed yet officially. We can find some patches against the bugs in the Net and I belive that the patche included in EffecTV fixes them widely. Thanks all, Kentaro vloopback lover