Problem about interval.remove

[Aaashair]

couldn't use remove to delete interval whose mark is None.

[kylebgorman]

Could you put a reproducible example into a Gist or similar pastebin site? I need the TextGrid file (or a file like it) and the code.

From this example I can't see what happens when you try this: does it simply fail to remove anything or does it throw an error. And it'd take me a while to type this in by hand since you only provided an image (and only part of the textgrid).