If you experience this error:
WEB BROWSER:
If you are running in a browser try removing your cached images and files in your history and reloading the page. For chrome CTRL+F5 should do it too (I think).
MOBILE:
Go into your android Settings >> Apps >> Land Of Mana, clear your data and cache and also go to the App Store and update to the latest version.
The reason this may occur is the map collisions changed, and your install may be using old map files.