Invalid type in operator ==

[eaparsek]

Hi All, I recently got a new computer (and with it the newest version of Alteryx). It seems that I am now getting this Invalid type in operator == error when using the generate rows tool as below. On my old computer this worked fine with no errors but now when I run this flow it is not running correctly even though no changes have been made. Does anyone have an idea of what could be causing this issue? 

[geraldo]

@eaparsek 

In my opinion, this structure is wrong.

[eaparsek]

Are you able to elaborate on this point at all?

[geraldo]

I see that the initialization and loop the variable you are creating FailedReason must be initialized and the loop will be assigned to some column of the input data.