I have an ascii file with 5 tab-delimited columns of numbers containing keyframes for 5 different channels - 1 row per frame.

When I read it with a File CHOP once it shows me that there are 5 channels, another time - that there is only 1 channel.

How do I make sure that the File CHOP always picks up the 5 channels?

turned out to be ‘operator error’
besides the numerical data, i had some text that i hadn't commented out.