indomain/2 gives type error in version 5.5 (not before!)

Hi,

I have fd and fd_search loaded:

[eclipse 35]: X :: [red, blue, green], indomain(X, random).
type error in indomain(_248{[blue, green, red]}, random)
Abort

[eclipse 36]: X :: [red, blue, green], indomain(X, split).
type error in indomain(_248{[blue, green, red]}, split)



However, if X is an integer domain, there is no problem:

[eclipse 38]: X :: [1,2, 100, 341], indomain(X, random).

X = 100
More (0.00s cpu) ?



Now, this used to work in version 5.3 perfectly and I was able to use
indomain/2 with random choices with variables with symbolic domains.


Did something chang with (symbolic) finite domains?

Cheers

Sebastian