QB Issue Resolution:

it is a large jump in years and the data base itself changed at least once

it needs to be stepped up

intuit data services will do it for free if you bought from intuit, other wise it costs

or find a pro advisor locally that has intervening years installed who can restore your back up, and make a newer back up.  2010, 2013 then the new version is my suggestion, but other year installs may work too

Resolution for Issue 'Upgraded from 07 to Premier 2016. Cannot load company file. Cannot load restored backup even tho file dr says nothing wrong with file.' available: Yes (Solved).
Source: Intuit Community forum.

Upgraded from 07 to Premier 2016. Cannot load company file. Cannot load restored backup even tho file dr says nothing wrong with file.: 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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