I just installed the update released this morning and I am able to launch Layout Designer without the error, as well as update my invoice template which I desperately needed!

Resolution for 'App Crash issue: 'Quickbooks Mac 2019 Layout Designer App Crash' available: Yes.

The App Crash issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the App Crash issue yourself by looking for a resolution described in the article. If it is a complex App Crash issue or you are unable to solve the issue, you may contact us by clicking here or by using other App Crash support options.

For more information about resolving issues related to App Crash in Quickbooks/QBO or to get support for the issue 'Quickbooks Mac 2019 Layout Designer App Crash', click the link below: