What is Firefox Portable Rev 2?

Firefox Portable 53.0.2 was released and, within an hour, a user discovered an incompatibility that interfered with the ability to run multiple profiles with our Second Profile utilities. So, we fixed the error and pushed out a new version. Rather than calling it Firefox Portable 53.0.2.1, which would not match the version of Firefox, 53.0.2, that was bundled, we settled on using Revision nomenclature to distinguish updates that are only of the portable components. So, in this instance, the updated version of Firefox Portable 53.0.2 with the fix for Second Profile use, is called Firefox Portable 53.0.2 Rev 2.