Cursor Vanishes Puntuado con 1 de 5 estrellas

Installed Scribefire on 2/2013 using Firefox 18.0.2 on a Windows XP system. When I try to use the arrow keys on my keyboard to move the cursor within a WordPress post in Scribefire, the cursor vanishes and won't come back until I use the mouse to place it. Not very useful. No response from authors.