Desperation causes me to try yet again to build a form

iMac Retina 5k 3.5GHz i5. 8GB DDR3. OS X 10.10.5. Latest versions of Adobe CC and all the relevant plug-ins.
Attempted to simply place a form on a page by making the fewest necessary options to see whether I could actually start the process which I have, at times, been able to do in the past. But this time when I hit "Finish" I get the following error making it necessary to cancel out.

And please I ask your indulgence in the following rant.
I use your products because I am stupid about these things and not willing (I am probably able but at 69 I'd rather turn bowls on my lathe and build antique cars and bikes: something I'm very good at) to learn how to build forms from scratch that are as comprehensive as yours are intended to be. It has been far too long for a resolution to this ongoing problem and I am rather surprised that there isn't more dissension in the ranks. I look at other products (DMX comes to mind) and in order to achieve the same results I'd have to spend considerable $. I think it would be in all our best interest if you could suggest a potential workaround that could get us through these trying times. It seems from what I've read here and from the little knowledge I've gleaned about you that you are more than capable of resolving these problems. I can only assume that you simply have too much on your plate.

My best guess is that this is a cache issue. Try:
1) Close dreamweaver
2) Delete your cache .dat file in your user configuration folder
3) Re-open dreamweaver and try again.

If you still have problems please post your phone number in the private area and I can call and do a screen sharing session with you to figure out why this is happening.

Did as suggested and got this:

Fatal error: Call to undefined function virtual() in /data/10/1/87/19/1087834/user/1133069/htdocs/durajointTest/contact.php on line 1

on this page…
http://014da19.netsolhost.com/durajointTest/contact.php

Didn't crash though.
Not yet anyway.

Found the answer here
http://www.webassist.com/forums/posts.php?id=2793

Regarding my last post about, Jason said ""Create Links Relative To:" option is set to Site. If you change that to "Document" instead, Dreamweaver will use the "require_once"syntax."
Well I didn't read that far and just changed all my virtuals to required etc. which worked. There was also a large occurrence of / ahead of many Webassist linked documents. Changed those too but every time I go in to make a change to this form all the virtuals and /'s reappear. Now I just checked my site and it is and has been set to "Document" so why is this happening?
It is frustrating because I am out of necessity proceeding in baby steps to stave off the innevitable DW crash. Making a simple change and "Finishing" and every time I do that all the errors pop back.

http://014da19.netsolhost.com/durajointTest/contact.php
will probably be in a constant state of flux till this is resolved.

Update:
Simple changes are not possible. Endless crashing.

Dreamweaver should only be using virtual and starting paths to includes with "/" when using site relative and not document relative links. If that isn't working correctly then I can look into it with you in a screen sharing session. Please post a US phone number or Skype contact information and I can contact you to debug.

See private

private

The issue what that there were two sites defined with the same root and the first one was still set to site relative links.

Thank you Ray