Ok, so ive successfully created and run my own map using the notepad. I thought id make it more indepth by creating a background story in the browseDescription"" section. As i was writing, the text reached the end of the line and it jumped down to a new line, as expected. Carried on writing, finished, went back to the game to select the map and see its description but as i did it came up with the minidumb error message.
I thought it was to do with the format of how i wrote my text, so changed the body from "story1
                                                                                                                                   story2
                                                                                                                                       story3"
to

"story1"
    "story2"
        "story3"

(just because in some languages you have to do that, like C)

But still came up with the error message.

Now i dont know if its the way im formatting it or if its the length of the story but when i get rid of it all and have it how it originally was, or just have like a two sentence story it runs fine. Any help on this would be greatly appreciated.