I have uninstalled WAIK, rebooted machine, installed english version of WAIK, deleted "vLite\wimfltr" and "wimgapi.dll" from "C:\Program Files (x86)\vLite" And vLite is finally working. Seems like reason of problem was non-english version of WAIK. I'm very surprised that such (mis)behaviour of vLite is not described in stickies (or I'm blind?). I don't believe that it is uncommon problem. Cheers and regards.