ncloth does not simulate.

[tkuu0001]

I have made ncloths many times by deleting the type history first then create ncloth. However, I checked the start frame time of the nucleus and remade a new model but still have no idea why the cloth won't drop. Please help me look at the file down below. thank you!

[DyllanCFX · Accepted solution]

It looks like the "Current Time" in your nucleus is disconnected from Time node.  By default, this should already be connected.  To fix it, you can either connect it manually in node editor or create a new nucleus and assign everything to the new solver.  Hope this helps.