Hi
As an alternative...
Click the FX button on the text clip.
Click the green + and open the Transparency effect.
Click the down arrow on the Select Preset box.
Select Fade In and Out from the choices.
Now click the green cross tab at the top of the keyframe.animation window.(Add keyframes) You will see that the fade In and Out animation line is rather basic. (Up to the middle of the clip and back down again)
Just grab the line just after the start and drag it up to the top. Do the same just before the end. This should produce a nice fade in and out.
Here's the animation pane before and after...
BEFORE

AFTER

Nat