Nitroglycerin explosions aren't very powerful as of 70.1, and plutonium seems to have been nerfed. It is now impossible to make a nuke. My fireworks bomb, which used to be pretty strong, now simply makes a cloud of hot fireworks particles. I tried the new ignition cord on some nitro and the nitro simply turned into a white-hot cloud of fire that didn't expand, didn't rise very far, did absolutely nothing. I  had gravity on for this. Last time I checked updates weren't supposed to break saves. This one breaks any saves with explosions. Is there anywhere I can download the last beta? Because after seeing this I really want to downgrade. >:(

I have a mini-nuke that (because of its size) was simply a ball of neutrons surrounded by plutonium with a fuse shell. It used to work perfectly, leveling a wood house in seconds. Now it breaks through the shell and dumps the plutonium on the ground. I had a bigger nuke that used C4, neutrons and plutonium and it does exactly the same thing. Loaded up a nuke someone else had uploaded and it didn't work. I had seen that save before and it used to work. The normal explosions seem to have been nerfed too. I had a pretty destructive bomb made from fireworks with a wood shell. It was about the same strength as a small nuke. It's almost harmless now. Nitro simply lights up bright white and fades away.

I have air pressure, velocity, etc. all on. What I meant was that explosions are nowhere near as powerful as they used to be. Fire takes forever to move at all. Plutonium doesn't explode, just fizzles and then dies down.

https://powdertoy.co.uk/Browse/View.html?ID=522992 Small nuke that used to work (I don't know how to embed saves)
https://powdertoy.co.uk/Browse/View.html?ID=12910 Didn't make this one but it used to work.
Tried redownloading TPT but the nuke still fails.