On a website which uses Dropkick CMS, the htaccess file for this to work appears to be preventing the form from displaying:
RewriteEngine On
RewriteBase /
RewriteRule ^(cms)($|/) - [L]
RewriteRule ^(install)($|/) - [L]
RewriteCond %{REQUEST_URI} !^(\.png|\.jpg|\.gif|\.jpeg|\.bmp)/$
RewriteCond %{REQUEST_URI} !^(.*)/filemanager/(.*)$
RewriteRule (.*.html|.*.php|.*.htm) cms_worker.php?page=$1 [QSA]

Browsers report HTTP 500 error can't display the page.
Using Ver 2.5 Build 5437
PHP Ver 5.5 on server
Website using latest version of RSD

I know nothing about htaccess files and was wondering if the CMS and Web Form Builder form are not compatible?
The form will display correctly when the htaccess file is removed.
Thanks in advance for any advice.