CodeSnip v4.6.4 released - urgent bug fix

Release 4.6.4 fixes a serious bug in v4.6.3 for users running Internet Explorer 9. v4.6.3's fix of an Internet Explorer 10 related bug managed to break the program for users of IE 9 due to differences in the web browser control used by CodeSnip. If you're using IE 9 (and earlier?) you should update ASAP.
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