CSV Import: No HTTP resource was found that matches the request URI

Error:

When "Execute Import All" I receive:

No HTTP resource was found that matches the request URI 'http://localhost:59991/IdentityBroker/api/1.0/Connector/ImportAll?id=7355468d-c89d-43eb-a5fd-0829c5b9e40f'. 

Further Connector Details:

IdB details:

Log:

UnifyLog20170906.csv

CSV:

employeephones.csv

Steps to re-create:

1. Install IdB 5.2

2. Create CSV Connector for attached CSV (Set EmployeeID as Key)

3. Attempt full import

Troubleshooting steps so far:

• Server restart, same error
• Log review, couldn't find any pertinent entries
• Port 59991 test (telnet responds on localhost)
• CSV file permissions (IdB it can do initial read for header information and the service user has local administration rights)
• Other operation tests:
  • Execute Import Changes results in a similar error
  • Clear Connector does not error
  • Disable does not error
  • Add adapter for connector does not error
  • Copy Connector does not error