Can not program the next button to advance to next scene - HELP!

My next button will not advance my course to the next scene.  This is what happens:

Scene 1 has 11 slides.  Slides 1-10 all advance with the next button as programmed.  The last slide, slide 1.11, will not advance to Scene 2.  I have tried the following unsuccessfully to correct:

1.  When the user clicks next, jump to slide 2.1

2.  When the user clicks next, jump to Scene 2

3.  Jump to slide 2.1 when the timeline ends

4.  Jump to scene 2 when the timeline ends

5.  Deleted all triggered and re-created them all

6.  Copied Slide 1.10 (that works perfectly), copied and replaced the slide with all of the images from Slide 1.11 to 1.10 and re-created the triggers

7.  Moved Slide 1.11 into Scene 2, making its new slide number 2.1.  Then triggered Slide 1.10's next button to Slide 2.1

8.  Duplicated slide 1.11, creating a slide 1.12, and then have new slide 1.11 trigger to Scene 2

9.  Duplicated slide 1.11, creating a slide 1.12, and then have new slide 1.11 trigger to Slide 2.1

10.  Created a new scene 2, copied the slides from old scene 2, pasted in the new scene 2, and tried to trigger from slide 1.11

Where do I go from here?  I am on a timeline, and this problem just appeared on Friday!!!!