That's strange. Are you uploading it through Tinypic.com first? Make sure you do that. :3 Just upload your image and then take the link encased with that [img.]http://-link-[./img] code. You can try changing your game's rendering system if you have not tried it already:
CRASHING.
- Go into C:/Feralheart/media/particles and delete any ending in _0, _1, and so on. You could also search "particle" in your PC and delete any ending in _0, _1, etc. Particles can sometimes find themselves in other folders.
- Change your rendering system by doing this:
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."

Look at the first two lines in the orge.cfg file. That is where you change your rendering system.

If you followed everything that was typed and the instructions in the pictures, you should have successfully switched your rendering system.
Sometimes a quick change of the rendering system works - It happens every once in a while. ;)