Thread: "This field is required" - the mystery deepens

"This field is required" - the mystery deepens

I need help troubleshooting this error statement.
I "searched and replaced" all instances of the phrase "This field is required" and substituted "This field cannot be left blank".

(Search and replace was performed on every file in the ClassiPress theme.)

Still the error persists, when posting a new ad and clicking the "Continue" button the "This field is required" is displayed one time - clicking the "Continue" button a second time permits the user to continue and the ad is posted successfully.
Perhaps it is cached somewhere?

Now:
Could someone check this for me
In the step-functions.php file, there is a class="invalid marker" and a class="invalid" statement
Is the class="invalid marker" statement supposed to be "class="invalid" ?

I ask because the class="invalid marker" only occurs that one time any any of the coding and it seems inappropriate.??