thunderbird bus error, Linux

[zelig]

I try ./thunderbird (as root or 'normal' user') and the message appeares:

./run-mozilla.sh: line 451: 3860 Bus error "$prog" ${1+"$@"}

The line 451 of 'run-mozilla.sh' is:
echo " ADDON_PATH=$ADDON_PATH"

What is wrog? How can I fix it?

I am running mdk10 with kde (3.2), have already installed Firefox and it works without any problems. I am Linux newbie.

Zelig