Okay, followed the advice of some of the guys in IRC and here's what worked for me. YMMV:
1) Go to FTB Launcher opts
2) Click on Force Update
3) Launch
4) Shutdown ftb/minecraft and restart ftb
5) Go into mods
6) Disable Portalgun mod
7) Download: http://repo.creeperhost.net/downloads/ichun/filespg^portalgun1.4.2v0.2_universal.zip
8) Add the downloaded mod (hit add mod, navigate to your downloads folder & select it)
9) Launch again and attempt to login to the server.
This works for my server which I have NOT updated in any form or fashion from before the modpack rollout today.'
My suggestion: Wait to update any versions of the modpack if you play multiplayer until your server admins tell you to specifically update.
If you're a server admin, try to hang out in the #ftb and #ftblauncher irc channels and direct some of the more virulent idiots over here to the forums which is the actual support place.
1) Go to FTB Launcher opts
2) Click on Force Update
3) Launch
4) Shutdown ftb/minecraft and restart ftb
5) Go into mods
6) Disable Portalgun mod
7) Download: http://repo.creeperhost.net/downloads/ichun/filespg^portalgun1.4.2v0.2_universal.zip
8) Add the downloaded mod (hit add mod, navigate to your downloads folder & select it)
9) Launch again and attempt to login to the server.
This works for my server which I have NOT updated in any form or fashion from before the modpack rollout today.'
My suggestion: Wait to update any versions of the modpack if you play multiplayer until your server admins tell you to specifically update.
If you're a server admin, try to hang out in the #ftb and #ftblauncher irc channels and direct some of the more virulent idiots over here to the forums which is the actual support place.