Topher's dashboard

I have the same problem with logging onto lastfm using the login in songbird. After clicking, nothing happens. I'm running windows 7 64bit and songbird 1.20.
Error console says:

Error: [Exception... "'invalid file header in signons file' when calling method: [nsILoginManagerStorage::init]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "JS frame :: file:///C:/Program%20Files%20(x86)/Songbird/xulrunner/components/nsLoginManager.js :: anonymous :: line 106" data: no]
Source File: file:///C:/Program%20Files%20(x86)/Songbird/xulrunner/components/nsLoginManager.js
Line: 106

and:

Error: this._storage is null
Source File: file:///C:/Program%20Files%20(x86)/Songbird/xulrunner/components/nsLoginManager.js
Line: 464

Could it be a problem with functionality on x64 systems, because on my previous x64 vista it didn't work either, but on my x32 xp it worked.