Insert and Email - Error

Hello,

For the past few days I have been trying to get the following to work with absolutely no luck.

Send an email when the submit button is pushed and Insert a record in the database.

All on one page using UE 4 only.

I can get the email portion to work, no problem.
However as soon as I add the insert (logging) part, the whole things goes pear shaped.

After filling in all the details, assigning the form fields I click ok.
Then I hit Finish...

UE takes a few seconds, I assume its building something.
Then the JavaScript Error pops up.

"While executing applyServerBehaviour in CreateEmailMessage_WA.htm a java script error occurred"

I am then forced to visit %appdata% and remove the DAT file, if I don’t I cannot access UE at all.

Here is a link to video of events so you can exactly what I am doing:
index.html

Any help would be greatly appreciated.