I created a universe running with a TCL script. With this script its possible to do several iterations. I tried to run the simulation with ptcl.The first iteration was done without any problems. But at the beginning of the second iteration there was an error : "can't open /home/... for writing | error in setting up the schedule".I was using the loop SDF target and specified to create a log File and especially this was the problem. For the second iteration Ptolemy wanted to write the log File not to my specified File ($HOME/schedule.log) but to another directory and therefore exited with an error. What is the reason for choosing the wrong PATH and FILENAME for writing the log file? ---------------------------------------------------------------------------- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]