[15.2] Tutorial script crash after 3rd step of tutorial 1

[CmdrKeen]

I accidentally laid too many tracks for the 3rd step of the tutorial and got this script error.
Video with reproduction steps:
https://www.youtube.com/watch?v=gZ7hv9lFSLI

before

1.jpg (54.52 KiB) Viewed 1898 times

after

2.jpg (33.62 KiB) Viewed 1898 times

[Klonan]

Thanks for the report,

This is fixed in 0.15.3