[failed to login bad login to any modpack]

what do u mean modpack how would i make the launcher a modpack just give me step by step instructions

Apparently, the Technic Staff fixed the problem; I am now able to join servers without the bad login error.

[[1.0.6] Tekkiet Tekkion [PvP/PvE] [10] [Whitelist] [Nothing Disabled]]

• Minecraft IGN: MTHW10
  
• Age: 13
  
• Gender: Male
  
• Location: Yonkers, NY
  
• Why do you want to play on T4?: This server seems to have a fun, exciting feel from reading the page. It has a small community that I'm comfortable to work with, plus nothing is banned, which makes things greater. This also seems like a good place to start learning the new Tekkit, as I have not played much with the new mods. I hope to play with some of my friends on this server.
  
• Describe your past experiences in Minecraft, in particular modded servers: I have played Minecraft for about 1 to 2 years now and have played Tekkit Classic for about a year. I play Minecraft almost everyday with friends. I have played on many modded servers and vanilla servers, I know how to host a server and install mods. I know essentially everything in Vanilla Minecraft and hope to learn about the new Tekkit.
  

[[3.1.2] Xeon Gaming Tekkit 3 Server, [PvE/PVP], [60 SLOT], [GREYLISTED], [ONLY ANCHORS REMOVED]]

IGN: MTHW10

I also want to add my friend.

IGN: xEpicDudex

Reason for wanting to become member: To be able to set our homes.

Why should we accept us: We will make a Youtube let's play series on your server.