QB Issue Resolution:

QuickBooks doesn’t contain instructions to shut down a computer. Its more likely a failure in the power – perhaps the battery has reached the end of its useful life? Were you running on battery power or plugged into a wall?

This sounds more like a hardware problem.

Resolution for Issue 'Is anyone having trouble with QuickBooks 2011 for Mac shutting down computer? This just started happening. When I click vendor center or report center the computer will completely shut down' available: Yes (Solved).
Source: Intuit Community forum.

Is anyone having trouble with QuickBooks 2011 for Mac shutting down computer? This just started happening. When I click vendor center or report center the computer will completely shut down: this 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 issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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