Just yesterday when I tried to login to my server I keep getting the error in the subject line "the server requires mods that are absent or out of date on your client" and all I can do is disconnect from the server. Here is a screenshot of what I'm seeing: http://prntscr.com/17tl2d I have tried changing the launcher to use FTB Ultimate 1.1.1 for the modpack but with no change I have not added any mods or deleted any mods from anything. As far as I'm aware my server is FTB Ultimate 1.1.2 (I'm not sure how to check the version to be 100% sure) My launcher is v1.2.4 and is using FTB Ultimate 1.1.2 modpack Here is the server log: http://pastebin.com/mk4Egex2 I'm also seeing logs with the following names: ForgeModLoader-server-0.log, ForgeModLoader-server-1.log, ForgeModLoader-server-2.log Each of these are over 500Kb so if you need to see them please let me know so I can find something other than pastebin to upload the information to. Machine spec for both launcher and server: Windows 7 Home Premium 64bit AMD A6-3620 running @ 2.2GHz 6GB RAM (2GB selected for the launcher) DDR3-1333 I am not using a Minecraft hosting provider, I'm using a LogMeIn Hamachi client in order for people to connect to the server. The Hamachi client is up to date. Please let me know if anything else is needed to figure out what's happening.