Seestar S50 Mosaic on Mac OS 15.6 -observations

Apologies first off, I posted this somewhere else and I think it was the wrong spot but I had an odd console message.

I had subframes from four mosaics from my Seestar S50 and wondered if I could put them all together. I found the preprocessing script DSA-Seestar_Mosaic_Preprocessing.ssf and used it

It ran but as you can see it said it failed.

12:18:25: Image # 983 - RA:313.810 - DEC:+31.020 - Rotation: +44.5

12:18:25: Image # 984 - RA:314.034 - DEC:+31.278 - Rotation: +44.7

12:18:25: Image # 985 - RA:314.032 - DEC:+31.279 - Rotation: +44.7

12:18:25: Sequence framing: -40.0

12:18:25: Astrometric registration computed.

12:18:25: Finalizing sequence processing failed.

12:18:26: Setting CWD (Current Working Directory) to ‘/Users/paul/Documents/PAUL/Photography/7 Astrophotography/Siril/SIRIL STACK PROCESSING’

12:18:26: Script execution failed.

Being still a novice at using Siril I was defeated for a while but looked at the tutorial Smart-telescope mosaic mode Siril which didn’t refer to the script but I did understand what it was planning to do. So I followed everything, creating a sequence, then using Plate Solver for intial registering and then applying that. It ran but as you can see a similar failure.

12:42:22: Image # 982 - RA:313.809 - DEC:+31.019 - Rotation: +44.5

12:42:22: Image # 983 - RA:313.810 - DEC:+31.020 - Rotation: +44.5

12:42:22: Image # 984 - RA:314.034 - DEC:+31.278 - Rotation: +44.7

12:42:22: Image # 985 - RA:314.032 - DEC:+31.279 - Rotation: +44.7

12:42:22: Sequence framing: -40.0

12:42:22: Astrometric registration computed.

12:42:22: Finalizing sequence processing failed.

At which point I nearly gave up but I continued to follow the tutorial as it appeared especially as the Astrometric registration had been completed. Rather than show any more output, suffice to say I applied the registration and then stacked the results and got a great output. I was thrilled. Granted I now see there are areas I need more data but that’s fine

So my question is, is the Finalizing sequence an issue with my data or just something in the code which isn’t working but ultimately isn’t necessary to complete the job. BTW I must say the tutorial was brilliant.