Well In mathematics, a division is called a
division by zero if the divisor is zero. Such a division can be formally expressed as *upload.wikimedia.org/math/c/3/e/c3ee230eb1858b3d7bd4677178c44863.png where
a is the dividend. Whether this expression can be assigned a well-defined value depends upon the mathematical setting. In ordinary (real number) arithmetic, the expression has no meaning. In computer programming, integer division by zero may cause a program to terminate or, as in the case of floating point numbers, may result in a special not-a-number value...
LOL ....Phun aside ...try Uninstalling and Installing DUF 1.4 and see if it helps ....
You can also check this link...
*vinuthomas.com/Forums/viewtopic/t=1315/postdays=0/postorder=asc/start=180.html