No question this time, just a FYI post on a situation I encountered while using the Form Builder. I run a local IIS5.1 (WinXP) / PHP 5 installation with MySQL 4.1, and CMSMS 1.2.3. I downloaded and installed the current Form Builder build 0.4.4 and set it up, along with CMSMailer. CMSMailer was able to send out emails through SMTP without any problem.
I ran into the following issue. When I added or updated certain parameters ("From name" for email, "From address" for email or Destination Email Address) in either an "*Email Results to set Address(es)" or "*Email Results Based on Pulldown" field, the address would appear to be stored, but as soon as I clicked the "Save" or "Save and Continue Editing" button on the main form screen, it would say there were no email addresses set: To: [unspecified] and "Email Template not yet set!". Trying to send the form on the website itself would result in a "Sorry! There was an error handling your form submission." message.
After having turned on debug mode in config.php I noticed that INSERT statements to the cms_module_fb_field_opt failed with a "duplicate key" error. According to the listed SQL statement the module was trying to insert a new record with option_id 0.
Turned out that for some odd reason, the cms_module_fb_field_opt_seq table was created during the module's installation, but no initial record was placed in this table. Consequently the Form Builder module, when asking for a new ID, kept receiving 0's. The fix was simple enough: I added a new record to the cms_module_fb_field_opt_seq table with a value of "1".
I'm posting this in case someone else happens to run into a similar situation and, unlike me, can find the solution to this situation through Google

Cheers,
Pieter