I am attempting to load notes via a legacy system -- I have created the template as suggested in the documentation here: https://help.salesforce.com/articleView?id=000230867&language=en_US&type=1. I have tried to upsert using Jitterbit and SF Data Loader with no success. Here is the error message I am getting from Jitterbit:
 

Fatal Error
Transformation failed.

Error(s) while processing C:\Users\MPlunkett\Desktop\SALESFORCE IMPORTS\Notes\notes-test.csv

Call to webservice at https://parkersearch.my.salesforce.com/services/Soap/u/37.0/00D41000000M61a failed. Reported error: The webservice call failed. The web service returned a SOAP Fault: 
Code: sf:UNKNOWN_EXCEPTION 
Message: UNKNOWN_EXCEPTION: An unexpected error occurred. Please include this ErrorId if you contact support: 2054325249-489880 (1110131948)  

Detail: <sf:UnexpectedErrorFault xmlns:sf="urn:fault.partner.soap.sforce.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="sf:UnexpectedErrorFault"><sf:exceptionCode>UNKNOWN_EXCEPTION</sf:exceptionCode><sf:exceptionMessage>An unexpected error occurred. Please include this ErrorId if you contact support: 2054325249-489880 (1110131948)</sf:exceptionMessage></sf:UnexpectedErrorFault>  

Additional details: Failed to call the web service at "https://parkersearch.my.salesforce.com/services/Soap/u/37.0/00D41000000M61a". Reason: The last (and probably most relevant) error was: The server returned HTTP Status Code : 500 Server Error  

Error is: The server encountered an unexpected condition that prevented it from fulfilling the request. Headers sent by the server: HTTP/1.1 500 Server Error Date: Tue, 21 Feb 2017 19:29:52 GMT Set-Cookie: BrowserId=YPCv95UDTLyCMzrZy-rTuA;Path=/;Domain=.salesforce.com;Expires=Sat, 22-Apr-2017 19:29:52 GMT Expires: Thu, 01 Jan 1970 00:00:00 GMT Content-Type: text/xml; charset=utf-8 Transfer-Encoding: chunked   

(The posted soap envelope was: 'C:/Windows/Temp/jitterbit_dl6/OpId_3567014_3dbcc36c-ada6-4811-a112-13cb11911a73/1_notes-test_t3520774_target.csv_req.xml'.) [CODE:10721] file: WebServiceHandler.cpp, line 1027 [CODE:10104] file: TreeMapperWebService.cpp, line 142 Failed to perform transformation using local source file: C:/Windows/Temp/jitterbit_dl6/OpId_3567014_3dbcc36c-ada6-4811-a112-13cb11911a73/1_notes-test.csv

My .csv file:
 

Title	Content
Note from Dashboard	C:\temp\notes\1-100348-1486163064.txt

File is valid and verified -- no invalid character

Any thoughts/suggestions?