Heidisql doesn't open mixed linebreaks

Dears, I have an issue when I'm trying to opem Heidisql, once click to open immediately pop-up one windows where mendtioned "This file contains mixed linebreks", I have tried reinstalling the program, reinstall MySQL but the same issue happened. I'll apreciate your support to solve it.

Your file should be loaded after clicking OK, isn't it? What's the problem exactly?

That message pop-up sevaral times and Heidisql never open.

Thanks Ansgar, After more than 50 clicks in "OK", Heidisql open and start working again.

Probably the file is modified outside HeidiSQL several times?