Issue: Dorico Export from Cubase can't add players

I’m attaching a score excerpt exported from Cubase, which, when opened in Dorico 5, doesn’t allow for new players to be added in the setup mode. Attempting to add a new player or section results in the loss of all existing note data. “Undoing” the player add does not recover the lost data and clicking through the modes afterwards causes a crash.

Not sure if it’s a Cubase issue or a Dorico issue, please advise.

Coyote and Ant_Score02_Orchestration00.dorico (483.8 KB)

Inexplicable, but I get the same result in Dorico 5 Pro.

Here’s a diagnostic report.
Dorico Diagnostics.zip (1.4 MB)