I have this same problem.
I selected product catalog but to use my own product table and columns. I chose to include the ProductName, ProductMetaKeywords, and ProductPrice. The configure field settings are Name: / Text / Medium ; keywords: / text / medium ; Price: / Text / Medium.
I choose product catalog and went through the wizard (the preview had Search TextArea for name, keyword and price), the results and detail page have content but the search page has 12 lines of code:
<?php require_once("webassist/form_validations/wavt_validatedform_php.php"); ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">