John Hi,
Lately I have been using the multiple runs in Sim Traffic (5 runs) and every once in a while when I go to creat a report I get a message saying that the history file is marked read only, and that no new recording can occur.

I then can't get the program to even rerun. Any Ideas...

Hmmm, is the file located on a network drive? Sometimes network software will mark files as read-only. You then would see this message.

I would not expect this if the files are stored on the local drive. Of course, me not expecting this does not mean it isn't happening. If it is the latter case, please let me know and we can investigate some more.

Thanks,

John.