ADE 4.5.12 crashes on macOS 15.7.3 when copying BorrowBox books to Kobo (DRMProcessorImpl::syncToDeviceResp)

Hi all — I’m hoping someone at Adobe (or anyone who’s solved this) can advise.

I’m trying to transfer library ebooks (BorrowBox / ACSM) to a Kobo Clara BW. The workflow is: download .acsm → open in Adobe Digital Editions → connect Kobo via USB → Copy to Device.

Problem: ADE consistently crashes during the copy/sync step to the Kobo.

My setup

• Mac: MacBook Pro (Apple silicon M2 Pro)
• macOS: 15.7.3 (Sequoia)
• ADE: 4.5.12 (1)
• Kobo: Clara BW

Where it fails

• ADE launches fine and can open the .acsm
• Crash occurs when attempting Copy to Device / syncing to the connected Kobo (USB)
• Crash report shows:
  • Code Type: X86-64 (Translated) (running under Rosetta)
  • Exception: EXC_BAD_ACCESS (SIGSEGV)
  • Crashed Thread 0 in: adept::DRMProcessorImpl::syncToDeviceResp(...)
•  

What I’ve tried

• Full uninstall/reinstall of ADE
• Deleted ~/Library/Application Support/Adobe/Digital Editions and ~/Documents/My Digital Editions and re-authorized
• Different USB cable/port, direct connection, reboot
• Still crashes on the device-copy step

Questions

1. Is ADE 4.5.12 officially compatible with macOS 15 (Sequoia) and/or Apple silicon (Rosetta) for Kobo device transfers?
2. Is there a known workaround to avoid this crash (e.g., different authorization sequence, settings, older ADE version that works better on macOS 15)?
3. Is a fix/update planned?

Happy to paste more of the crash log if helpful (I have the full report). Thanks.