Zombies from new tents

[Virtus]

Hey,
As of last patch (0.6.0) whenever I start a game and build my 1st tents they last about 15 to 20 seconds once complete before they burst into zombies... This is in the first moments of the game with no prior zombie attack, there are no zombies present when this occurs.

I tried repairing and also demolishing the tents for a rebuild but the same thing happens again which makes it unplayable obviously. I have restarted the game several times but always with the same result.

Prior to the patch I had no issues apart from the game giving me a good kicking on a regular basis.

Cheers in advance for any suggestions/solutions.