Instead, please use a "Common" form type and the features provided in Site Explorer > Forms to access the same functionality that was previously provided using the "Custom Form Builder" part type.
For additional information about creating and using Common forms in Blackbaud NetCommunity, please refer to the following resources:
- Blackbaud NetCommunity "Forms Guide"
- How to create a form or Online Admissions application in Blackbaud NetCommunity (BB703240)
- How to place a common, online admission, or online re-enrollment form on a page in NetCommunity (BB750439)