Try this, might help.
Right click on the Internet Explorer icon on the desktop and select Properties.
Look at the tabs and the top and click on the last one called Advanced.
Scroll down until your see the line "Enable third party browser extensions". Ensure the box is UNCHECKED.
Click on Apply and then OK.
If it still won't print, try disabling your antivirus software, restart IE and try again, but stay on a trusted site while you do it.