Hello i have a problem in flash cs5 professional, i have put opacity to the pond page symbol but now i cant cancel these blue lines showing in the lake, these remains in the frame..
Just quickly looking at the file, it appears that your two shapes with opacity are not perfectly aligned. The dark blue lines are the overlap of the two shapes. You can fix this two ways:
1) make sure your Water shapes are an even pixel width, and use the properties window to make sure they are numerically aligned. (or you can just zoom in really close and hopefully see what is going on.) Sometimes flash gives you problems if you are using partial pixels 100.53 px instead of 100.px
2) Forget about the opacity, and just make opaque light blue shapes, then you will not be able to view the overlap.