Jack, I'd just re-install the older build if I were you!
To f*ck with using the recent build to render anything(as the PS team have stated themselves, without swearing), at least the last build worked.
I was actually seriously considering pre-purchasing this program up until a couple of weeks back(I still may but not for this 'broken' piece of wank, alpha) but, looking around in here, I can feel the frustration of everyone who has, and has updated(downdated?) to the new version. You're right, it IS nearly halfway through the year, wasn't this program scheduled for final release around 1 and 1/2 year ago? Then, six months ago, then the end of the year, then the first 1/4 of THIS year, then...
WHEN?
It doesn't bother me that it isn't built yet, I'm a free user after all, it just bothers me that we've been told SO many times that it will be finished by (insert some invented date here) and it never is.
I have sung PS's praises since I begun with TG2, but now, I lose faith rapidly. Do I want to pay this money for a piece of broken(optional, I understand) or unfinished software, no!
Well, I'll dick around with my unregistered version, it's still my favourite landscape program, but, Jeeesus hurry up, I want to buy this!
Fix it, I'm not paying until it's done, I won't be one of these poor users in here who seem to have been taken advantage of for their money!
And, jack, make your own default .tgd's for startup, that way your render settings can be whatever you want them to be, everytime.