DIRECTRT ALWAYS asks for data overwritting

[issrcadmin]

We are conducting an experiment using your software. Specifically the experiment starts with MediaLab and then DirectRT takers over for several parts.We are using 6 participant computers.

When DirectRT takes over we get the following message in all computers:

Data file s:\Friend study\DirectRt\Data\Painting1 ... 5 secs\ ... csv already exists. Data from this session will replace existing data. Is this what you want?

Previously, when this kind of error message appeared, it meant that we had accidentally entered the same participant number twice. Now it shows the same message systematically no matter the participant number we enter and on all computers. We have rebooted the computers and checked the server. The error message is still there.

We have deleted the DirectRT data folder, and the experiment was running again normally for 2 hours. Then bugged again as described above.

I cannot attach experimental files as they are too big.

Thanks for a quick reply!!