Comment # 28 on bug 874621 from Shirish Pargaonkar

Adding something like this should resolve this probelm:

#
# If depmod and modules.dep files exist, remove modules.dep and recreate it
# since the contents of modules.dep do not have a consistent format across
# releases.
#

DEPMOD=$(type -P depmod)
if [ -f $DEPMOD ] && [ -f /lib/modules/$KERNEL_VERSION/modules.dep ]; then
    rm /lib/modules/$KERNEL_VERSION/modules.dep;
    $DEPMOD $KERNEL_VERSION;
fi