Yes, as WolfKate said above, did you uninstall before you reinstalled FH? Character Reset may also fix the issue, especially if the first character in your main account screen is stuck somewhere.
However, if even this doesn't work, it's probably your rendering system. Try this:
1.) Open your FeralHeart folder, and find the file that says Ogre.cfg
2.) Open Ogre.cfg with Notepad, and you'll see lots and lots of codes inside!
3.) However, you only need to focus on the first line, and you need to change it to ONE of these codes:
Render System=Direct3D9 Rendering Subsystem
OR
Render System=OpenGL Rendering Subsystem
See which one works best for you, but this should resolve your issue. I hope ya get it working, floof. c: