Knowledge Base

Problem

When attempting to export the Trial Control Log in EthoVision XT, the export loads partway and then EthoVision closes unexpectedly without completing the export.

Details

This issue has been observed in EthoVision XT 18. The standalone Trial Control Log export can fail or crash the application, particularly for experiments with large or complex trial control configurations. An alternative export path via Track & Dependent Variables avoids the crash.

Solution

1. Instead of using the dedicated Trial Control Log export, export Trial Control events and states via the Analysis Profile:
- Open the Analysis Profile for your experiment.
- Ensure the relevant Trial Control events and/or states are added as variables in the profile.
- Run the export from within the Analysis Profile rather than from the Trial Control Log export dialog.
2. Save the export output to a local folder on the EthoVision PC (not a network drive), as network paths can contribute to export failures.
3. If the crash persists, reduce the number of trials included in a single export batch.
4. If the issue continues, contact Noldus technical support and provide your EthoVision version, license number, and a sample experiment file for further investigation.