Okay. Go into the .techniclauncher folder in %appdata%\roaming and deleted the last login file. Then opened the launcher again and I was able to login and it connected to minecraft.net. I also went into the launcher folder within the .techniclauncher folder and then to mirror.yml and change "mirror.technicpack.net" to "technicpack.net" delete the mirror. This seemed to work
Edit: You have to delete the lastlogin file each time you close and run the launcher.
Re: Launcher 5.4.7 Error
Okay. So i went into the .techniclauncher folder in %appdata%\roaming and deleted the last login file. Then opened the launcher again and I was able to login and it connected to minecraft.net. I also went into the launcher folder within the .techniclauncher folder and then to mirror.yml and change "mirror.technicpack.net" to "technicpack.net" delete the mirror. off. This seemed to work for me.
Edit: You have to delete the lastlogin file each time you close and run the launcher.
Re: Launcher 5.4.7 Error
Did you mean can't connect to the mirror link? The link is bad. I had to have my brother download it and put the file in his dropbox. I don't quite understand the inconsistency though. Don't know a whole lot about it.
Even with the launcher fix, I can't connect to minecraft.net. Is anyone else have this problem? I'm on a 64x Windows 7. Java (64x) is updated. I'm using Microsoft Essentials for antivirus so that shouldn't be a problem. There is no firewall issue. Any ideas?