I'm pretty sure this has something to do with the fact that I was just using Audiosnap. I've supposedly disabled Audiosnap, but when I position my cursor over the end of a clip so I can drag the end of it, the cursor turns into an arrow with a vertical line next to it. In the center of the vertical line is a diamond shape. I am unable to drag the end of the clip. How can I get back to the normal mode? Thanks.

Bounce to clip, then try again.

That worked. Thank you.

that means you have audio transients in focus. shift-click the header of the clip or select clips from the focus selector and you can stretch without bouncing first.

Thanks to you also. I always get into trouble with Audiosnap. Gotta learn how to use it.