I've just run the Pre-Scan on my Win 10 1909 and it came back without error.
I then opened the repairs in normal mode and checked to see if it had created a registry back up - which it did.
I then went into Event Viewer and saw this error which it has been producing of late and of which others have reported -
Log Name:      Application
Source:        Application Error
Date:          22/11/2019 22:15:46
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      KAM4-TOSH
Description:
Faulting application name: TweakingRegistryBackup.exe, version: 3.5.0.3, time stamp: 0x582f3b59
Faulting module name: MSVBVM60.DLL, version: 6.0.98.15, time stamp: 0x49b01fc3
Exception code: 0xc000041d
Fault offset: 0x000c9ba6
Faulting process ID: 0x1e94
Faulting application start time: 0x01d5a18255d7d455
Faulting application path: C:\Program Files (x86)\Tweaking.com\Windows Repair (All in One)\files\registry_backup_tool\TweakingRegistryBackup.exe
Faulting module path: C:\WINDOWS\SYSTEM32\MSVBVM60.DLL
Report ID: 6bbef93a-06f5-40ae-8dd2-fc7c8076aeb7
Faulting package full name: 
Faulting package-relative application ID: 
Event Xml:
<Event xmlns="
http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2019-11-22T22:15:46.091252100Z" />
    <EventRecordID>14815</EventRecordID>
    <Channel>Application</Channel>
    <Computer>KAM4-TOSH</Computer>
    <Security />
  </System>
  <EventData>
    <Data>TweakingRegistryBackup.exe</Data>
    <Data>3.5.0.3</Data>
    <Data>582f3b59</Data>
    <Data>MSVBVM60.DLL</Data>
    <Data>6.0.98.15</Data>
    <Data>49b01fc3</Data>
    <Data>c000041d</Data>
    <Data>000c9ba6</Data>
    <Data>1e94</Data>
    <Data>01d5a18255d7d455</Data>
    <Data>C:\Program Files (x86)\Tweaking.com\Windows Repair (All in One)\files\registry_backup_tool\TweakingRegistryBackup.exe</Data>
    <Data>C:\WINDOWS\SYSTEM32\MSVBVM60.DLL</Data>
    <Data>6bbef93a-06f5-40ae-8dd2-fc7c8076aeb7</Data>
    <Data>
    </Data>
    <Data>
    </Data>
  </EventData>
</Event>
I've reported this to Shane but haven't had any feed back on it yet.