[Limdep Nlogit List] ;asc

[Hendrik Ernst]

Dear list members,

I tried to estimate a Discrete Choice model with a Nlogit command as 
follows:

NLOGIT
;Lhs=wahl,anzalt,alternat
;Choices=vas,self
;asc
;model:
U(vas)=price*Preis+time*zeit+quality*Qualitt+VAS*Revas/
U(self)=price*Preis+time*zeit+quality*Qualitt+VAS*Revas$

The following error mesasge occurred:   Error   999: The specification 
;ASC is not recognized.

The Nlogit version I am using was purchased this year so the command 
schould be working in principle.

Any help is appreciated.

Thanks and regards,

Hendrik.