...the genereator window is now out of the border so the map frame is no longer visible...
If you talking about that thick simple black-and-white frame, then you can turn it on in the context menu: Elements > Matte.
...there were just random new icons...
There is a new toggleable option in the context menu called "Uniform" (Details > Towns > Uniform). It's disabled by default and all the settlements are drawn in its own random style. If you enable this option, town icons will look exactly like they looked in previous versions.
...the "Export png" function isnt working for me.
How does it look? You choose Export as > PNG in the context menu and nothing happens? Does the svg export work for you?