Piece will not play in the coda(s)

I have been working on this for a very long time.

I had a 4 bar coda but was unhappy with it, so I decided to add another 4 bars with the coda I wanted. The Treble part was the same but the Bass part was different.

In the 1st 4 bars, initially I used the "tempo changes" plug in for a final rit. Everything worked fine.

However, I wanted to use the same rit plugin on the last 4 bars and then delete the previous 4 bars of the coda.

So, I tried to copy the tempo plugin changes by selecting the 1st 4 code bars and then Rt. clicking on the rit as laid out by the plugin and copying it to the 2nd 4 bars.

The program would not do that so I tried redoing the plugin on the last 4 b ars and then deleting the initial 4 bars.

When I went to play that last 4 bars, the program would not play. I also tried playing the entire 8 bar coda and it still would not play.

I went to the beginning of the piece and it still played.

I tried closing and rebooting the program and got a message that there were 2 bars corrupted, bars 52 and 55 which had an extra 1/2 rest added in voice 2 making the bars corrupted.

I remove those rests but still no joy.

All work has been done within the piano part, not the score.

Piece is attached. Any help will be very appreciated as there are many many hours of work trying to finalize it. :)

Thanks.