Does this happen to any of you? As soon as I attempt to load the Lucky38 worldspace, the GECK crashes instantly.

I could load all 5 related cells without issues. Did you try just waiting? The GECK has to load like 700-2500 references (depending on which cell it is) and it may appear to 'freeze' while its loading. My computer takes about 10 seconds to load ~2100 reference. Try waiting like 30 seconds to see if it 'unfreezes'.

No, I get the usual "freeze" when loading the references, then as soon as it gets to "1 reference remaining", it comes up with "The GECK has stopped working". This only happens in this specific worldspace and nowhere else.

EDIT: It seems to be related to the busemultibounds fix. It seems that the lucky 38 is the only place in the game that uses multibound markers. Seems when you set this INI setting to 0, the GECK crashes when you encounter one.