Yeah on external, works fine no problem. Tested with just about every payload also.
funny you should ask this i got stuck on one of the levels 10 hours in i had to restart the game and got stuck in exactly the same place its a shame because its a awsome game the hardest i ever played but awsome
I have got quite a way through this, no issues encountered yet. Running Hermes4b and using Gaia or Open Manager on external hdd - no problems that i am aware of.
Yup working fine on Internal and External (tested both).