Sorry guys! 3.7.58-beta had a problem. It was only up for a half hour or so, then 3.7.59-beta fixed it.

@booboogaga, glad you got it sorted. Don't forget to go back to the latest beta!

BTW, if Spine has trouble starting, you can set the version you want in your version.txt file here:

Windows: <user home folder>\Spine\version.txt
Mac: <user home folder>/Library/Application Support/Spine/version.txt
Linux: <user home folder>/.spine/version.txt

Create it if it isn't there. Inside the file put the version you want, eg 3.7.57-beta. Delete the version.txt file to use the latest version.

@booboogaga, are you using 3.7.48-beta? This should be working correctly there.

You need to do a box selection like @booboogaga shows in his gif above.

@booboogaga instead of giving the string a 300x multiplier you could give the bow 33 translation influence instead.
What moves the string is the hand with the arrow after all.
Regarding your specific question, I'd have to see your setup, are bones constrained to the path? is the constraint set on chain scale?
If it's ok with you I can have a look if you send the project to contact@esotericsoftware.com otherwise guessing from a gif is a bit hard for me.