Sometimes, when I am importing data into Smallworld using FME, I get a Smallworld error message in the FME log. Unfortunately I get only the condition string and not the accompanying traceback so it is usually very difficult to debug. The traceback is also not written out to the Magik standard output.
This simple hack will cause any error conditions raised during an FME import to have a traceback dumped to the Magik standard output.
(click on image below to enlarge)