I have also followed the test steps of removing the specified com.apple. and iMessage entries from the KeyChain of this computer. I deleted the flash storage and ensured that my SOCKS proxy was not enabled.
I logged out and back in. Then I tried to open Internet Accounts again - and this is what I got from the System Message Logs:
2014-11-06 8:43:21.880 PM com.apple.xpc.launchd[1]: (com.apple.imfoundation.IMRemoteURLConnectionAgent) The _DirtyJetsamMemoryLimit key is not available on this platform.
2014-11-06 8:43:23.478 PM QuickLookSatellite[6355]: CGSConnectionByID: 0 is not a valid connection ID.
2014-11-06 8:43:23.479 PM QuickLookSatellite[6355]: Invalid Connection ID 0
2014-11-06 8:43:24.107 PM com.apple.xpc.launchd[1]: (com.apple.imdmessageservices.IMDMessageServicesAgent) The _DirtyJetsamMemoryLimit key is not available on this platform.
2014-11-06 8:43:24.107 PM com.apple.xpc.launchd[1]: (com.apple.imfoundation.IMRemoteURLConnectionAgent) The _DirtyJetsamMemoryLimit key is not available on this platform.
2014-11-06 8:43:32.222 PM QuickLookSatellite[6355]: CGSConnectionByID: 0 is not a valid connection ID.
2014-11-06 8:43:32.222 PM QuickLookSatellite[6355]: CGSConnectionByID: 0 is not a valid connection ID.
2014-11-06 8:44:02.807 PM bird[6011]: zone creation error: <CKError 0x7fac55935300: "Partial Failure" (2/1011); "Failed to modify some record zones"; partial errors: {
69NH26W767.com.newtypekk.thefractalx:__defaultOwner__ = <CKError 0x7fac53540970: "Server Record Changed" (14/2037); "Error saving record zone <CKRecordZoneID: 0x7f99f2b3b0c0; 69NH26W767.com.newtypekk.thefractalx:__defaultOwner__> to server: Protection data didn't match">
}>
2014-11-06 8:44:04.825 PM cloudd[6038]: Received error 53 from the server: <CKDPResponseOperationResultError: 0x7f99f2676860> {
clientError = {
type = zoneProtectionInfoTagMismatch;
};
errorDescription = "Zone PCS oplock failed";
errorKey = ck1lb0idb;
}
2014-11-06 8:44:06.000 PM kernel[0]: bird[6011] Unable to quarantine: 93
2014-11-06 8:44:09.000 PM kernel[0]: bird[6011] Unable to quarantine: 93
2014-11-06 8:44:31.629 PM identityservicesd[6012]: [Warning] IMSetKeychainData: -67808 -- Could not store data for service: com.apple.facetime account: registrationV1 accessGroup: nil
2014-11-06 8:44:43.091 PM accountsd[6043]: Enter ShareKitAccountEnabler - didChangeWithType - type=2 for account j****@*******.com (F92AA4AC-1EA2-4619-AD70-995625C713F6).
2014-11-06 8:44:43.091 PM accountsd[6043]: AIDA Notification plugin running
2014-11-06 8:44:43.156 PM icbaccountsd[6379]: Connection error while checking Apple Internalness. Error: Error Domain=NSCocoaErrorDomain Code=4099 "Couldn’t communicate with a helper application." (The connection to service named com.apple.CrashReporterSupportHelper was invalidated.) UserInfo=0x7fda78501e50 {NSDebugDescription=The connection to service named com.apple.CrashReporterSupportHelper was invalidated.}
2014-11-06 8:44:43.273 PM sandboxd[164]: ([6379]) icbaccountsd(6379) deny mach-lookup com.apple.CrashReporterSupportHelper
2014-11-06 8:44:43.367 PM sandboxd[164]: ([6379]) icbaccountsd(6379) deny file-read-data /Library/Preferences/com.apple.security-common.plist
2014-11-06 8:45:02.107 PM System Preferences[6366]: view service marshal failed to init due to Error Domain=NSCocoaErrorDomain Code=4099 "Couldn’t communicate with a helper application." (The connection from pid 0 was invalidated from this process.) UserInfo=0x60800026fd00 {NSDebugDescription=The connection from pid 0 was invalidated from this process.}
timestamp: 20:45:02.106 Thursday 06 November 2014
process/thread/queue: System Preferences (6366) / 0x10052a000 / com.apple.NSXPCConnection.user.endpoint
code: line 2872 of /SourceCache/ViewBridge/ViewBridge-99/NSRemoteView.m in __62-[NSRemoteViewBase advanceToConfigPhase:awaitingWindowRights:]_block_invoke
#communications_failure
2014-11-06 8:45:02.108 PM System Preferences[6366]: ### com.apple.preferences.internetaccounts instantiatePrefPaneObject exception:service com.apple.preferences.internetaccounts.remoteservice failed to init an instance of InternetAccountsRemoteViewService on behalf of <NSRemoteView: 0x7f8860d35f20> due to proxy-communications-error: Error Domain=NSCocoaErrorDomain Code=4099 "Couldn’t communicate with a helper application." (The connection from pid 0 was invalidated from this process.) UserInfo=0x60800026fd00 {NSDebugDescription=The connection from pid 0 was invalidated from this process.}