Quickbooks>check for updates, there was a patch released this week regarding El Capitan.
Resolution for 'Crash Catcher issue: 'Crash Catcher will not go away' available: Yes.
The Crash Catcher 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 Crash Catcher issue yourself by looking for a resolution described in the article. If it is a complex Crash Catcher issue or you are unable to solve the issue, you may contact us by clicking here or by using other Crash Catcher support options.
For more information about resolving issues related to Crash Catcher in Quickbooks/QBO or to get support for the issue 'Crash Catcher will not go away', click the link below: