@LanLingXiaoXiaoSheng, This error was a consequence of the update on the time-definition for TF files from multitaper as described in here: SEEG epileptogenicity tutorial - #7 by Raymundo.Cassani
Now it is addressed for processes in the Process1 and Process2 tabs. Commit da16c5f
Please update your Brainstorm instance, and try once more.