The php page which processes this form and some other related scripts are not available. Without the necessary source you would have to recreate the folder/file write functionality for this form to work.
This is the main reason why we want all developers to submit their code to XOOPS, so if they disappear for whatever reason, the code won't disappear with them. We've had too many situations like this: with some modules and with this "Theme Builder"
This is the "run over the truck" scenario - what will happen if the developer gets hit by a truck. Where is the code? How can the community have access to it? So please: if you develop something for XOOPS, please place it on XOOPS or SourceForge.