Ah, yes. The particles could be the culprit. Go into your C: >>> Feralheart >> media > particles and delete any ending in _0, _1, and so on. Sometimes particles double when they are exorted, causing the map to crash. Particles can also get themselves into the my_objects folder, so it wouldn't hurt to check there. ^^
If you don't find particles in those folders, search them in your PC.
Also, make sure your map is 513 x 513! That's very important.
Lastly, does your map have many objects? That can cause the map to crash.
AND, you can try switching your rendering system.
Method number 1~
First, go into C: > Feralheart. If you look at the FH main folder, you will see a flie called:
'orge.cfg'
Click it, and open it with 'NOTEPAD'.
(http://i62BannedImageSite/28re5wn.png)
Look at the first two lines in the orge.cfg file. That is where you change your rendering system.
(http://i58BannedImageSite/vhfdop.png)
If you followed everything that was typed and the instructions in the pictures, you should have successfully switched your rendering system.
Method number 2~
Turn on FH!
On the main screen, you will see this:
(http://i62BannedImageSite/2v8kda1.png)
Click options, and go to video. Click 'Rendering System.'
(http://i58BannedImageSite/op3axx.png)
Then just simply switch your rendering system.
Note that sometimes method 2 doesn't always work- That's why I listed the orge.cfg file first. ^^
Good luck! Hope this helped those who don't know how to change their rendering system!~