Hi,
I made a test with IE on the demo website and I can't reproduce the problem.
Would it be possible to have an access to the website in order to make some tests with IE, try to reproduce the problem and fix it ? (you can send me it by private message).
In IE, you have some development tools too (shortchut is: F12). You can check the console in order to see the javascript error, you can read the network data, etc.
Which version of Internet Explorer do you use ?
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.