1997 Honda Accord Driver Side Front Window Regulator Assemb

The power windows on the driver side front window will go down but will not go back up. When I hit the switch to raise it, there is no sound. When I hit the switch to lower the window, I hear a click letting me know that the window is try to lower but it does not move because it is already lowered. I had this problem about 2 months ago and replaced the Front Window Regulator Assembly Left Front Door Power. It worked for awhile. I had intermittent problems raising the window after installing it but for the most part it worked fine. Now all the window will do is lower but will not raise. What could be the problem?