sperform giving unknown error 3205 ?

Hi, We have recently installed our forms on a solaris 2.5 machine. When we use sperform and select any form from the list, it gives 'Unknown error message 3205' and exits. If we run 'sperform <form-name>' on the command line, it tries to come up but exits immediately like a flicker on the screen. The same forms run on another sol. machine fine. We tried to recompile them also, but no use. We are running informix 7.13.uc5. Our manual has nothing for FORMS and we are not too familiar with it. There is no error 3205 in Informix error manual. Any clue/pointers what might be wrong?. Please cc me in your reply if possible. Thanks much. AH