how much memory in OS ?
if you look in arc.ini the srep command, is using
default values, so you should have NO errors, unless your doing too much at once, & your system cant handle it.
Code:
packcmd = srep {options} -m3f -l512 -c256 -a4
start over again, with nothing else running in the background, no downloads etc, test to see if it gets that same error again ?