I notice that an issue that I spent the better part of the afternoon debugging was fixed in your SVN v685582. The code indicated Version: 0.5.4.3 both before and after this fix. May I ask why you didn't issue a new version for this change? It seems dangerous to release code in different states with the same version number.
(This was bug the fact that the plugin previously set $_SERVER['HTTPS'] to "Off" instead of leaving it blank or setting it to (lowercase) "off", either of which would have been fine. The new v685582 code fixed that, but it would have been nice to have know that a plugin update was available.)