st: SQ - problem with sqom command

[Teresio Poggio <terlist@gmail.com>]

Dear Statalisters,

I've installed the SQ ado files (Kohler,  Luniak and Brzinsky-Fay) on
a pc of our computer lab (Stata 10.1 IC on win xp 32 bit) without any
problem:
ssc install sq

I've then tested whether the command  sqom is working properly (one of
our lab users informed me about a problem with sqom), by following a
test proposed by Ulrich Kohler on a previous thread in Statalist
(http://www.stata.com/statalist/archive/2011-02/msg01316.html)

.discard
.mata: mata mlib index

. use http://www2000.wzb.eu/~kohler/ado/youthemp, clear
. reshape long st, i(id) j(order)
. sqset st id order
. sqom,  subcost(meanprobdistance)


and I have been returned the following error message:

                 <istmt>:  3499  sqomref() not found
r(3499);

Any ideas on what's going on? Any help would be appreciated.
Kind regards,

Teresio
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