This was my fault. When fixing the prevous bug one of the IDs I renamed was image3, as there were two of them which was causing a conflict, however I failed to notice that one of the IDs pointed to the gtk-undo image. I changed the icon in the file menu to be the changed ID and the problem was fixed (again very very sorry).
This was my fault. When fixing the prevous bug one of the IDs I renamed was image3, as there were two of them which was causing a conflict, however I failed to notice that one of the IDs pointed to the gtk-undo image. I changed the icon in the file menu to be the changed ID and the problem was fixed (again very very sorry).