Is your problem that you are unable to open a particular document and that your MacBook freezes when you try to open it?
If so, then it might be quickest to send me your 'faulty' document and see if it will open on my MacBook - unless I would require a special/unusual application to open this type of file.
Then we will know if it is a problem with the file, your App or something on your computer.
Just private message me if you would like to try something like this.