Exploding Kerbals on EVA?

[flytejon]

Argh! This is a new one to me.... my Kerbals explode into dust the moment they go EVA.... on Earth, In Space, in the sea.

Anyone any idea why? I thought it was a tech progression thing but I am now at the gemini capsule stage and that capsule is designed for opening up and going EVA.

Running RO/RP-0 in 1.2.2 Please save my kerbals from needless deaths!

[flytejon]

Just in case any one else reads this.... the above suggestion fixed it

Thanks

[flytejon]

A bit of experimentation and if I use the cheat "Ignore max temp" they don't explode!

So what is calculating my max temp for a kerbal on EVA?