SBS 2011 fax service problem after replacing modem

Hello! I have an SBS 2011 server that has been running without serious issues for a good bit, and last week the modem servicing the built in fax server died. It was a Zoom USB, and was replaced with a USB USR5637.  Drivers for the old one were removed and the new one added, and the modem installed successfully with no errors.  Configuring fax service wizard no longer allows me to select route through email (which was being used) so I chose "store in file" to get this back up and running and got the three green checks completing the wizard.  The fax service shows as not started, it starts and stops with Event ID's 32108 and 1000 (below) logged in the app log.  I've removed and re-added the fax service and that didn't change anything... Any thoughts or hints to get this working again would be awesome!  TIA!
Log Name:      Application
Source:        Microsoft Fax
Date:          8/27/2018 3:35:02 PM
Event ID:      32108
Task Category: Unknown
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      DC.domain.local
Description:
The Fax Service encountered a problem and needed to close.
 Error Code: 0x00000000
 This error code indicates the cause of the error.
 A Windows Error Report was generated with full details about the problem.
 The Fax service will restart now.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft Fax" />
    <EventID Qualifiers="49152">32108</EventID>
    <Level>2</Level>
    <Task>4</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2018-08-27T20:35:02.000000000Z" />
    <EventRecordID>5494286</EventRecordID>
    <Channel>Application</Channel>
    <Computer>DC.domain.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>0x00000000</Data>
  </EventData>
</Event>

Log Name:      Application
Source:        Application Error
Date:          8/27/2018 3:36:43 PM
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:   DC.domain.local
Description:
Faulting application name: fxssvc.exe, version: 6.1.7601.17514, time stamp: 0x4ce7b339
Faulting module name: FXSTIFF.dll, version: 6.1.7601.17514, time stamp: 0x4ce7c672
Exception code: 0xc0000005
Fault offset: 0x000000000005c462
Faulting process id: 0x593c
Faulting application start time: 0x01d43e459e291168
Faulting application path: C:\Windows\system32\fxssvc.exe
Faulting module path: C:\Windows\system32\FXSTIFF.dll
Report Id: e8718174-aa38-11e8-a7fc-000c299d06ec
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="2018-08-27T20:36:43.000000000Z" />
    <EventRecordID>5494292</EventRecordID>
    <Channel>Application</Channel>
    <Computer>DC.domain.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>fxssvc.exe</Data>
    <Data>6.1.7601.17514</Data>
    <Data>4ce7b339</Data>
    <Data>FXSTIFF.dll</Data>
    <Data>6.1.7601.17514</Data>
    <Data>4ce7c672</Data>
    <Data>c0000005</Data>
    <Data>000000000005c462</Data>
    <Data>593c</Data>
    <Data>01d43e459e291168</Data>
    <Data>C:\Windows\system32\fxssvc.exe</Data>
    <Data>C:\Windows\system32\FXSTIFF.dll</Data>
    <Data>e8718174-aa38-11e8-a7fc-000c299d06ec</Data>
  </EventData>
</Event>