Using build 1.04 (no betas):
Currently on turn 41. Many turns ago received notification of discovery of "Light Tank". On all the turns since, under "Mnt" and "Type" Light Tank is in green with an asterisk. Tool tip says that the model type has been discovered, but have not designed any models yet. Under "Mnt" and "Models" tanks are not even listed on the left side with the other designs; (e.g. - infantry, buggies, etc.)
Several times I've tried to design a model. No first page options between building new or upgrading existing model. First page to appear is the specs page to start designing. Go through the specs and the director says "O.K., we're working on it." Seems each time I tried, the BP increases - up to 1600 now. I've already upgraded the truck twice - up to heavy diesel engine now. On my tank specs, I'm middle of the road on gun, armor, and engine.
All other models seem to be working fine. I fear that I may be overlooking something obvious. Does it need to be "researched" after discovery? (Been a long time since discovery). Is there a prerequisite that I don't have yet? Any assistance is appreciated.
Thanks in advance!
I'm having a little trouble working out what your problem is exactly. Can you not raise a formation including tanks, even independent battalions? The models you've designed don't show up under "Light Armor" in the Model tab? The model design doesn't seem to allow you to iterate on already-developed models? Certainly SOMETHING weird is going on if it costs 1600 to design a new tank, and might very well be a bug. You're getting the "Yes sir, we're focusing on developing a new model of light tank" dialogue and later on you get an announcement saying that a new model has been developed and you still can't build the thing?