When a photogate is used with a LabPro in time-based data collection, photogate data is sent by the LabPro to the computer at the end of data collection. If you choose to stop data collection early by clicking the Stop button, the data will not be sent to the computer.
When you use a LabPro with a photogate and a CFA, let the experiment run to completion. Do not click the Stop button.
For details, see Why do I get no photogate data when also using an analog sensor?