QB Issue Resolution:

Download and run another tool called, QuickBooks Component Repair Tool.

To download the tool, please go to this link: http://support.quickbooks.intuit.com/support/Articles/HOW1397

Resolution for Issue 'Opening company file crashes quickbooks 2015 pro after updating password' available: Yes (Solved).
Source: Intuit Community forum.

Opening company file crashes quickbooks 2015 pro after updating password: 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.

Support for Company File
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!

Error Recovery for Company File [Canada]
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Additional Support Options: