Condition files dissapeared

OS Win7
PsychoPy version 1.90.1
Standard Standalone? yes

I’m running copies of the same script on different computers simultaneously. Everything worked fine in several testing sessions, but in one, condition files disappeared from the “outer” loops, and I had to figure out what could suddenly go wrong.

Any ideas why this might have happened and what can I do to prevent it? I have 8 computers (4 pairs) running simultaneously in one testing session, and if I need to check every time that the condition files are in place that would be very time-consuming.

You’d need to explain exactly what you mean by this.