<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<TITLE>Message</TITLE>
<META content="MSHTML 6.00.6000.16546" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial size=2>Hello,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I have build my own FF for a copolomer. When I ran
the program, I got KE is NaN. I checked the output file trr. I found the initial
forces of all particles at frame 0 are infinite. Could anyone tell me why this
happened? Where I might make a mistake? Thank you in advance!</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Dongsheng</FONT></DIV></BODY></HTML>