This is with the standard 3.6.10 release. However last night I tried it on the nightly 3.6.11 windows build and the problem still exists there.
Also tried it this morning on the laptop. Same problem.
As suggested, Karajorma, I tried the 32000 value and no difference. Also tried a simple co-ordinate of 0,0,0. Same crash.
In a way, its a relief that this is not the expected behaviour (a bug) and that the results are reproducable each time. Is there's a chance for a fix in an upcoming build?
I would image all multiplayer games using 3.6.10 or above must be crashing if that SEXP is used.