Recently after upgrading to the newer version (8.7.1 to 9.2.5) of Click Dimensions, we started getting below error in one of the tabs in it. (during expand)
We were getting this error on the old forms that we had copied and created from the existing OOB Email Sends form.
Earlier the name of the function was SetTextIframe which was renamed to SetTxtIframe which caused that issue.
Hope it helps..