Error 19 Bad argument on appDialogBackground

Hi there,
I have this error message box when I want to open Photoshop in my Windows 7 (x64). It never happened before and I can’t fix it when I need to Photo merge. Can someone help me please to fix this error quickly? I need to meet a deadline project in Photoshop. Thank you!

Error
Error 19: Bad argument appDialogBackground.
– Line: 390
-> w.graphics.backgroundColor = w.graphics.newBrush (w.graphics.BrushType.THEME_COLOR, “appDialogBackground”);
OK
