The fix for Launchpad Bug 1542495: "OpenILS::SIP::clean_text() can crash" requires that you also upgrade SIPServer with the fix for Launchpad Bug 1463943: "Non-ascii Unicode characters in messages cause SIP client problems." This means that if you use SIP2 with Evergreen, you must also upgrade SIPServer to the latest commit in the Git repository. Conversely, if you upgrade SIPServer to the latest commit in Git, you must also upgrade Evergreen or, at least, apply the patch for Launchpad Bug 1542495. These two patches are complementary and cannot be applied independently of one another.