ripple/ripple-client — pull request #1202 by justmoon (2014-05-30 19:14:50+00:00)
Title: [BUG] Fix IE11 using a different path which makes its signature invalid

https://ripplelabs.atlassian.net/browse/WC-1671

Totally untested. But the basic issue is that in most JS engines the path always starts with a slash. IE omits the slash, so it gets a different stringToSign than the blobvault expects and that means the signature is invalid. So this should fix it.