QB Issue Resolution:

in 2013, run rebuild and verify 3 times, then make a back up from the file menu

copy the back up to a usb stick, then from the usb stick to your computer, to a folder you create for the file

open 2015 and restore from back up, it will convert

Resolution for Issue 'I have a new client who is running QB 2013. No one at his office will be working the file, so I want to move his company file to my PC. What is the best way to do this?' available: Yes (Solved).
Source: Intuit Community forum.

I have a new client who is running QB 2013. No one at his office will be working the file, so I want to move his company file to my PC. What is the best way to do this?: 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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