UniData / InterCall Problem

In light of the comments that have been posted here, I'm going to post my question on this list (it has already been posted on c.d.p.). Bear with me because UniData is completely new to me. I am having some problems getting the InterCall test program to work properly. I'm using UniData 5.1 on Digital UNIX. The ictest.c program compiled correctly with a little bit of convincing (had to adjust the link-library path to pick up some of the libraries it uses), but when I run it, it gives me error #39121, License Expired. However, when I check the licensing with confprod, I see the licenses are valid until 1/1/4000 (in other words, they never expire). Also, when I connect using the 'udt' program, everything works fine. As you can probably tell, I'm VERY new to this, so any suggestions you might have would be exceptionally helpful. Thanks in advance, - TJG