Better error message on skipping a second

[siilats]

Also, this works in the begging of the file, but in the middle I get repeated tokens sometimes and time timestamp keeps on advancing: [00:22:16.000 --> 00:22:18.000] Because you really need all the powers. [00:22:18.000 --> 00:22:27.000] [Indiscernible] [00:22:27.000 --> 00:22:28.000] Take off 1-8 center. [00:22:28.000 --> 00:22:40.000] [Indiscernible] [00:22:40.000 --> 00:22:48.000] [Indiscernible] [00:22:48.000 --> 00:22:49.000] 80 knots. [00:22:49.000 --> 00:22:53.000] Yes. [00:22:53.000 --> 00:22:54.000] V1. [00:22:54.000 --> 00:22:55.000] V1. [00:22:55.000 --> 00:22:56.000] V1. [00:22:56.000 --> 00:22:57.000] V1. [00:22:57.000 --> 00:22:58.000] V1. [00:22:58.000 --> 00:22:59.000] V1. [00:22:59.000 --> 00:23:00.000] V1. etc stuck at V1