Hello everyone, this is Troubleshooter development team.
A bug that can causes client crash has been reported and we are looking into the cause.
If you've experienced same situations, it'll be happened whenever you continue the mission. You can walk-around that issue by giving up the mission you've played.
We are very close to that cause. Please wait a few more minutes.
Thank you for your cooperation.
** Updated **
Hotfix for this issue has updated. Please update Troubleshooter client first and run game again.
Thank you.