On this level in the original game there are more Compiler placements than there are compilers appearing at the start. This gives you an element of randomness each time you play. In the current beta I am not getting a compiler appearing in the room with the assault rifle. Its placement is in front of the shield recharger. I've played it multiple times and it never appears.
In the Compiler trap at the end, three Compilers always drop down in the beta. But there are four placements up there. In the original game, four sometimes drop down.
Apart from that problem everything else appears fine, grenade hopping works, infra-red works and can be carried over to the next level, the Compiler trap works as in the original, so the glue triggers are all working perfectly. :)
Moving on... to *gulp* grenade climbing.