tvh 3.5 is old and there's no new development going into it - 4.0.x is the current stable, so I'd suggest you upgrade to that before trying anything else.
However, immediate reaction would be to check where the config is stored and the permissions to it for the UID of the tvh process... also, watch carefully as tvh starts just to make sure there isn't some broken installation that's constantly trying to set it up again, something like that.