TYPO3 Core

Can you provide your TypoScript setup (that one of the bodytext in the accordant form content element). Thus, it's easier to reproduce.

I used the following TypoScript in the Form-Element and created a FORM-Object directly in TypoScript with the same setup:

enctype = multipart/form-data
method = post
prefix = tx_form
confirmation = 1
postProcessor {
    1 = mail
    1 {
        recipientEmail = 
        senderEmail = 
    }
}
10 = TEXTLINE
10 {
    name = Test
    label {
        value = Testlabel
    }
}

This error is easy to reproduce. Just add the following typoscript to a TYPO3 4.6.0 instance.

page.100 = FORM
page.100 {
    enctype = multipart/form-data
    method = post
    prefix = tx_form
    confirmation = 1
    postProcessor {
        1 = mail
        1 {
            recipientEmail = 
            senderEmail = 
        }
    }
    10 = TEXTLINE
    10 {
        name = Test
        label {
            value = Testlabel
        }
    }
}

Patch set 2 of change Ie67484fd014620ea229a7bee8bfebd063a3b57ae has been pushed to the review server.
It is available at http://review.typo3.org/6537

Patch set 3 for branch master has been pushed to the review server.
It is available at http://review.typo3.org/6537

I am getting this error on typo3 6.1.4 when viewing a page with a searchform. When uninstalling the sysext form the page and searchform is fine.

Patch set 4 for branch master has been pushed to the review server.
It is available at https://review.typo3.org/6537

Patch set 1 for branch TYPO3_6-1 has been pushed to the review server.
It is available at https://review.typo3.org/23717

Patch set 1 for branch TYPO3_6-0 has been pushed to the review server.
It is available at https://review.typo3.org/23718

Patch set 1 for branch TYPO3_4-7 has been pushed to the review server.
It is available at https://review.typo3.org/23719