A third party dependency update in this version of SQL Prompt causes a crash, which causes SSMS to close after a few minutes of use.

To fix this, uninstall SQL Prompt v10.11.8 before upgrading to a newer version. SQL Prompt v10.11.9 can be downloaded here.

If you have already upgraded to a version later than SQL Prompt v10.11.8 without uninstalling it first, you will need to uninstall the version you currently have installed and then re-install it to fix the error.