At times, when I view my slide show in Keynote, instead of progressing through the slides as I've set them up, a previous slide will appear and as I click other out-of-order slides will appear.

Its worth trying this repair for Keynote, its solved many issues with version 6.1

perform all these tasks in the order below:

1 delete Keynote, right click Keynote in the applications folder and select Move to Trash

2 restart the Mac; Apple menu > restart

3 immediately after the start chime, press the shift key until you see the Apple logo.

let it fully boot up, it will take longer as the OS is repairing the drive

4 Applications > Utilities > Disc Utility; click on the boot drive > First Aid tab and click repair disc permissions

5 when complete, restart the Mac normally

6 install Keynote from the Mac app store

Please report back as this might help others if it works for you.

excellent result, thanks for posting back.