missing button after crash of another plugin

I was opening a topic to get help, because another plugin in my site had crashed and caused warning errors in Printfrienbdly as well. But then here I can read others are having problems this week, so it might be that Printfriendly is a lttle weak at the moment. I had my site restored with a backup but the print button is basically missing. I also FTP’ed the folder again but the problem is there. Any idea?