Receive form submission error (SCRIPT5007) in IE8 and IE11, but form still sends

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I have a form on the site that when submitted, tells the user there was an unknown error, and could not complete the submission. However, it does submit the form still. As far as i can tell, it only happens in IE8 and IE11.

When I look in the console heres an error that I get:

"SCRIPT5007: Unable to get property 'hasErrors' of undefined or null reference "File: certificate-of-insurance, Line: 413, Column:4"

Type: Discussion
Status: New
CB3008
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concrete5 Environment Information

# concrete5 Version
5.6.3.3

# concrete5 Packages
Advanced Forms (1.13.1), All In: The Advanced User Import Add-on (2.0), Automatic Email Obfuscator (1.2.3), Contact Directory (1.4), CoolInput Search (1.0), Data Display (2.7.1.4), Designer Content (3.1.1), Easy Accordion (1.0.1), Extended Google Map (3.3.5), Force SSL (2.6), Global Areas (1.1), Login Redirect (1.3), Page Redirect (1.4), Page Selector Attribute (1.1), PHP block by ND (1.0), Plain Text Block (1.0.1), Power Slider Lite (1.1.1), Pro Blog (12.4.4), SimpleFaq (3.0.0).

# concrete5 Overrides
blocks/add_faq, blocks/page_list, blocks/publications, blocks/openpositionstwo, blocks/bthree, blocks/old, blocks/search, blocks/power_slider_lite, blocks/bottomlinks, blocks/contact_directory, blocks/slideshow, blocks/problog_list, blocks/_sixeightforms, blocks/key_personnel, blocks/autonav, blocks/content, controllers/dashboard2, elements/header_required2.php, css/ccm.dcd2.css, models/page_list.php, single_pages/page_not_found.php, single_pages/dashboard2, themes/compsource, themes/core2, themes/compsource_old, tools/dashboard2, tools/page_controls_menu_js2.php

# concrete5 Cache Settings
Block Cache - On
Overrides Cache - Off
Full Page Caching - Off

# Server Software
Apache

# Server API
cgi-fcgi

# PHP Version
5.4.41

# PHP Extensions
bcmath, bz2, calendar, cgi-fcgi, Core, ctype, curl, date, dom, enchant, ereg, exif, filter, ftp, gd, gettext, hash, homeloader, iconv, imap, intl, ionCube Loader, json, libxml, mbstring, mcrypt, mysql, mysqli, mysqlnd, openssl, pcre, Phar, posix, pspell, Reflection, session, SimpleXML, soap, sockets, SPL, sqlite3, standard, tidy, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, zip, zlib.

# PHP Settings
max_execution_time - 30
log_errors_max_len - 1024
max_file_uploads - 20
max_input_nesting_level - 64
max_input_time - 60
max_input_vars - 1000
memory_limit - 512M
post_max_size - 128M
sql.safe_mode - Off
upload_max_filesize - 128M
mysql.max_links - Unlimited
mysql.max_persistent - Unlimited
mysqli.max_links - Unlimited
mysqli.max_persistent - Unlimited
pcre.backtrack_limit - 1000000
pcre.recursion_limit - 100000
session.cache_limiter - nocache
session.gc_maxlifetime - 7200
soap.wsdl_cache_limit - 5

Browser User-Agent String

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36

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