FTB Cant Decode Login

FTBLaunch starting up (version 1.2.6)
AnalyticsBackgroundThread started
Java version: 1.7.0_25
Java vendor: Oracle Corporation
Java home: C:\Program Files\Java\jre7
Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
Java vm: Java HotSpot(TM) 64-Bit Server VM version: 23.25-b01 by Oracle Corporation OS:
amd64 Windows 7 6.1
Checking for updates ... enUS English language file loaded!
Failed to decode logindata: java.io.StreamCorruptedException: invalid stream header: 00000000
remoteVer = 10
localVer = 10
Files are up to date
For input string: "     ": java.lang.NumberFormatException: For input string: "     "
 Fallback enUS loaded
 Added 0 enUS to options pane
 Added 1 cyGB to options pane
 Added 2 daDK to options pane