Error opening terminal

["manchild@dread-legion.com" <manchild@dread-legion.com>]

Hi,
have some problems with terminal-emulation.
Getting error message opening a terminal.
TERM set to vt100

The first time it works, but suddenly i get this error and i dont know 
what i have changed,..

System: Debian 3.0

Any ideas?

cu
gringo