UPDATE error while trying to update a column via WinSQL against Vist

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Connected via ODBC as administrator

ODBC advanced - Default isolation level: Read committed

Vista 6.1

Progress Database

Port 6150

SQL tool being used: WinSQL

My goal is to update some columns via a standard UPDATE statement.

My statement is:
UPDATE PUB.JobOper set WCCode = 'EZ' where WCCode = 'CRP' and OpCode = 'EZ'

When running I get:
Error: Syntax error (7587) (State:37000, Native Code: FFFFB1DD)

What is the syntax issue with my statement?
I've tried many variations.

Help.
Thank you in advance for your input.

Jim