rt2ms problems

Hi! When I run rt2ms on my Mac (10.5.8), I cannot get it to work! I get a weird error (copied below). I am searching for a solution, but rt2ms -f 114027620_0036EB79 -R -L -o MSEED -p par_rtms_edited.txt Version: 2010.293 Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Warning Will Robinson: Par file entry for this das, refchan, refstrm already exists. Using new value.Processing: 114027620_0036EB79 Error: Can't open 114027620_0036EB79. 'NoneType' object has no attribute 'open' 0.00 minutes This happens to all my ref files! I got my parameters all set set up, too. I copied a ref file into the local directory just to see why I get this. I changed permission... no luck. I am looking into the Python code, but am afraid to mess it up! I tried attaching the ref file, but it does not allow me. Ideas?