I found a fix for both.
1: Copied that map from v410 and pasted over it in v501
2: Deleted Event Page 5 form the event in RPG Maker then transferred the edited map from there into the game file.
A) Open the game up in RPG Maker.
B) Go to Map 276 (foreste ruin) and Map 282 (foreste Fixed Ruins outside).
C) Go to Event 004 on square 34.49, go to the 5th tab (which was empty) and click "Delete Event Page" then "Apply" and "Save Project".
D) Go to the Game files on the RPG Maker in "Data" and copy the "Map276.json" and "Map 282.json" files and paste over them in the regular game file www\data. (I would recommend you make a back up copy of the original unedited map files somewhere before pasting over them.)