AVG free keeps crashing

I have a Macbook Pro (macOS Sierra Version 10:12.4).  Since Updating my free version of AVG AntiVirus, it constantly, with few exceptions fails to complete the scan.  A msg appears indicating a choice to send a report to Apple.   This is partly a copy of the large file from error found:(Note: Sometimes it will complete once I restart), but rarely.   Tech support not available as this is a free version, but they should be notified of the problem, as I have done.   Are there others who have the same problem?  I have uninstalled and re-installed. Also, I have restores my operating system to a previous update – still keeps crashing.  Thanks

 " Application Specific Information:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unhandled finish status'
abort() called
terminating with uncaught exception of type NSException"
  "Process:               AVGAntiVirus [538]
Path:                  /Applications/AVGAntiVirus.app/Contents/MacOS/AVGAntiVirus
Identifier:            com.avg.Antivirus
Version:               17.1 (17.1)
Code Type:             X86-64 (Native)

Abe,
We understand this might be upsetting. We need to escalate this case to our senior level so please send us the screenshot https://support.apple.com/en-us/HT201361 of the error message you are getting.