@jrdnty​  It looks like your trying to write to GE Smallworld. Have a look at the FME for Smallworld tutorials on writing to Smallworld to see if there are any steps that you are missing when creating your FME workspace.

I don't think I've seen the error:

Smallworld Trnaslator Error: Vector size - 1048577 - should be between 0 and 1048576

before. At a guess, I think you might have exceed the default number of vertices allowed on a feature. You might see an error message in the Smallworld magik log that might point to where the error originates. You might have to contact your Smallworld reseller to clarify this error message with them.