Take a look at this and see if it helps...
http://support.microsoft.com/default.aspx?scid=kb;en-us;153544I did a google search on the error.
>Hi all
>i have a customer that i dial into using terminal services. recently i have been having trouble running up fp2.6 on it. i have restarted the server but to no avail. the error i get is windows 16 bit subsystem error, the 16 bit subsystem is unstable. its a 2k server machine that i dial into and the files are contained on a mapped drive to another machine but am not too sure what os, think 2k3 as it is mirrored to another machine for redundancy. any help very much appreciated on this.
>Slán
>~M
Wayne Myers, MCSD
Senior Consultant
Forte' Incorporated
"The only things you can take to heaven are those which you give away" Author Unknown