In the Actor -> Position palette, you can find the "direction self is facing" code. Then, you can use that as the angle for the bullets (please note, you may have to add/subtract 90 from it to make it work correctly, depending on how you setup your actors).
Try adding in "if not scene is transitioning" into the collision coding and placing the code you have into that. That way, it will only try to do the coding once instead of many time as the scene fades out (you can see what I mean in the second tutorial set, such as about 2/3 through Set 2, Tutorial 3).
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In the Actor -> Position palette, you can find the "direction self is facing" code. Then, you can use that as the angle for the bullets (please note, you may have to add/subtract 90 from it to make it work correctly, depending on how you setup your actors).