concrete5 Environment Information
# concrete5 Version
Core Version - 5.7.5.9
Version Installed - 5.7.5.9
Database Version - 20160615000000
# concrete5 Packages
ABC Auto Reply forms (1.0.2), Advanced Color Picker (1.0c), Automatic Email Obfuscator (2.0.1), Equinox (1.0.3), EZ Bio (1.0), Honest Websites Back To Top (1.0.1), HonestWebsites Simple testimonials (1.0.0), Icons for Redactor (0.9), Manual Nav (2.1.1), MP4 Player (1.5.8), Page Redirect (2.0), Page Selector Attribute (2.0), PDF Viewer (1.0.1), Spacer (0.9.3), Styled Maps (1.2.0), Zoomer (1.0.1).
# concrete5 Overrides
languages/fi_FI/LC_MESSAGES/messages.mo, languages/fi_FI/LC_MESSAGES, languages/fi_FI, languages/it_IT/LC_MESSAGES/messages.mo, languages/it_IT/LC_MESSAGES, languages/it_IT, languages/ja_JP/LC_MESSAGES/messages.mo, languages/ja_JP/LC_MESSAGES, languages/ja_JP, languages/sv_SE/LC_MESSAGES/messages.mo, languages/sv_SE/LC_MESSAGES, languages/sv_SE, languages/de_DE/LC_MESSAGES/messages.mo, languages/de_DE/LC_MESSAGES, languages/de_DE, languages/ru_RU/LC_MESSAGES/messages.mo, languages/ru_RU/LC_MESSAGES, languages/ru_RU, languages/fr_FR/LC_MESSAGES/messages.mo, languages/fr_FR/LC_MESSAGES, languages/fr_FR, languages/tr_TR/LC_MESSAGES/messages.mo, languages/tr_TR/LC_MESSAGES, languages/tr_TR, languages/sl_SI/LC_MESSAGES/messages.mo, languages/sl_SI/LC_MESSAGES, languages/sl_SI, languages/el_GR/LC_MESSAGES/messages.mo, languages/el_GR/LC_MESSAGES, languages/el_GR, languages/da_DK/LC_MESSAGES/messages.mo, languages/da_DK/LC_MESSAGES, languages/da_DK, languages/nl_NL/LC_MESSAGES/messages.mo, languages/nl_NL/LC_MESSAGES, languages/nl_NL, languages/fi_FI/LC_MESSAGES/messages.mo, languages/fi_FI/LC_MESSAGES, languages/fi_FI, languages/it_IT/LC_MESSAGES/messages.mo, languages/it_IT/LC_MESSAGES, languages/it_IT, languages/ja_JP/LC_MESSAGES/messages.mo, languages/ja_JP/LC_MESSAGES, languages/ja_JP, languages/sv_SE/LC_MESSAGES/messages.mo, languages/sv_SE/LC_MESSAGES, languages/sv_SE, languages/de_DE/LC_MESSAGES/messages.mo, languages/de_DE/LC_MESSAGES, languages/de_DE, languages/ru_RU/LC_MESSAGES/messages.mo, languages/ru_RU/LC_MESSAGES, languages/ru_RU, languages/fr_FR/LC_MESSAGES/messages.mo, languages/fr_FR/LC_MESSAGES, languages/fr_FR, languages/tr_TR/LC_MESSAGES/messages.mo, languages/tr_TR/LC_MESSAGES, languages/tr_TR, languages/sl_SI/LC_MESSAGES/messages.mo, languages/sl_SI/LC_MESSAGES, languages/sl_SI, languages/el_GR/LC_MESSAGES/messages.mo, languages/el_GR/LC_MESSAGES, languages/el_GR, languages/da_DK/LC_MESSAGES/messages.mo, languages/da_DK/LC_MESSAGES, languages/da_DK, languages/nl_NL/LC_MESSAGES/messages.mo, languages/nl_NL/LC_MESSAGES, languages/nl_NL
# concrete5 Cache Settings
Block Cache - On
Overrides Cache - On
Full Page Caching - On - In all cases.
Full Page Cache Lifetime - Every 6 hours (default setting).
# Server Software
LiteSpeed
# Server API
litespeed
# PHP Version
5.6.30
# PHP Extensions
bcmath, bz2, calendar, Core, ctype, curl, date, dom, ereg, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, imagick, imap, intl, ionCube Loader, json, libxml, litespeed, mbstring, mcrypt, mhash, mysql, mysqli, mysqlnd, openssl, pcntl, pcre, PDO, pdo_mysql, pdo_sqlite, Phar, posix, pspell, readline, Reflection, session, shmop, SimpleXML, soap, sockets, SPL, sqlite3, standard, tidy, tokenizer, wddx, xml, xmlreader, xmlrpc, xmlwriter, xsl, Zend Guard Loader, Zend OPcache, 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 - 256M
post_max_size - 16M
sql.safe_mode - Off
upload_max_filesize - 16M
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 - <i>no value</i>
session.gc_maxlifetime - 1440
soap.wsdl_cache_limit - 5
opcache.max_accelerated_files - 2000
opcache.max_file_size - 0
opcache.max_wasted_percentage - 5
zend_optimizerplus.max_accelerated_files - 2000
zend_optimizerplus.max_file_size - 0
zend_optimizerplus.max_wasted_percentage - 5
As far as we are aware there should not be any specific issues with this theme in IE11. It uses the popular Foundation grid framework which is compatible for IE11:
http://foundation.zurb.com/sites/docs/v/5.5.3/compatibility.html...
Are you running IE11 in compatibility mode?