Hi @iptz1,
to me, it looks like each and every invocation of the pplacer program fails. Unfortunately, I don't know what exit code -11 stands for. Typically, pplacer fails due to exceeding main memory. May I ask about the characteristics of your input? How many fragments and how long are they on average. Do I understand you correctly that the same input went through on your Laptop, but not on a server? What are the operating systems. Can you find out how much main memory is available for the job on the server? What if you limit the server job to just one core, i.e. --p-threads 1.
Thanks for your report!
Stefan