My opinion. The problem may be due to AV codecs or most likely due to the use of old or both Tandberg.mdl file in vPlug emu. It is necessary only the latest (Tandberg_v1.2) and the old deleted from "vModules" folder. Also SoftCam.Key & v_keys.db must be correct, only use the new keys of Tandberg enc., delete all old not valid keys in SoftCam.Key file
or
Unrar the attached file and all folders & files copy/paste in your the main "vPlug2.4.6f1" folder ... i'm update all new public keys
regards
Have a read Here => http://www.sat-universe.com/showpost.php?p=2036684871&postcount=557
Your issue really sounds like you need to update
to V 1.1 of Tandberg Emu Tool
good luck : ))