i can’t change task order in download list in bitcomet v1.78
what is the solution??
Well you could try upgrading - 1.78 is a VERY old version (current version is 1.84)
But I don't quite understand what you mean by 'task order'. If you're referring to the download sequence of files, it's in task properties (end tab). Select the download order, click on and that should start it (you did check the box at top left saying 'enabled customised download order' didn't you?