Very frustrated by this same error and X1 not starting.
Service log below, if it helps.
15 May 2013 05:42:59,009 [StartServiceHost] INFO X1Service - Ver:5000fg 64bit
15 May 2013 05:42:59,025 [StartServiceHost] INFO X1Service - Running from W:\X1 Index Apr 2013\X1 Search
15 May 2013 05:42:59,025 [StartServiceHost] INFO X1Service - Product name: X1 Search
15 May 2013 05:42:59,384 [StartServiceHost] INFO LicenseManager - Initializing the license manager
15 May 2013 05:42:59,384 [StartServiceHost] INFO LicenseManager - Subscribing to shared cache events for license reloading...
15 May 2013 05:42:59,384 [StartServiceHost] WARN LicenseManager - Blocking license initialization until license manager initialized: XS
15 May 2013 05:42:59,399 [10] INFO LicenseManager - Attempting to acquire mutex: TrialMutex
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Trial license file not found.
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Releasing mutex: TrialMutex
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Attempting to acquire mutex: ClientMutex
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Waiting for mutex: ClientMutex
15 May 2013 05:42:59,524 [10] INFO ClientLicense - Server Process detected. Paid License loaded successfully.
15 May 2013 05:42:59,524 [10] INFO LicenseManager - Client license initialized.
15 May 2013 05:42:59,524 [10] INFO LicenseManager - LoadClientLicense: Service process detected - Skipping refresh.
15 May 2013 05:42:59,524 [10] INFO LicenseManager - Releasing mutex: ClientMutex
15 May 2013 05:42:59,649 [StartServiceHost] INFO LicenseManager - Initialization of license manager complete, proceeding with plugin license initialization: XS
15 May 2013 05:42:59,649 [StartServiceHost] INFO ScannerManager - dataCollectionEnabled: True
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded ZipTextExtractor from ZipTextExtractor.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Plugin RarTextExtractor not found
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded StellentTextExtractor from StellentTextExtractor.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.FilesScanner from X1.FilesScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.OutlookScanner from X1.OutlookScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.ImapScanner from X1.ImapScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.SharepointScanner from X1.SharepointScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.X1ServerScanner from X1.X1ServerScanner.dll
15 May 2013 05:43:04,812 [StartServiceHost] INFO PluginProvider - PluginProvider Created
15 May 2013 07:59:47,708 [StartServiceHost] INFO X1Service - Ver:5000fg 64bit
15 May 2013 07:59:47,708 [WatchForShutdown] INFO X1UILauncher - Launch hotkey set to default Ctrl-Ctrl
15 May 2013 07:59:47,724 [StartServiceHost] INFO X1Service - Running from W:\X1 Index Apr 2013\X1 Search
15 May 2013 07:59:47,724 [StartServiceHost] INFO X1Service - Product name: X1 Search
15 May 2013 07:59:47,724 [WatchForShutdown] INFO X1UILauncher - Registered keyboard hook for Ctrl-Ctrl
15 May 2013 07:59:47,724 [WatchForShutdown] INFO ShutdownWatcher - Watcher is running
15 May 2013 07:59:47,942 [StartServiceHost] INFO LicenseManager - Initializing the license manager
15 May 2013 07:59:47,942 [StartServiceHost] INFO LicenseManager - Subscribing to shared cache events for license reloading...
15 May 2013 07:59:47,958 [StartServiceHost] WARN LicenseManager - Blocking license initialization until license manager initialized: XS
15 May 2013 07:59:47,958 [10] INFO LicenseManager - Attempting to acquire mutex: TrialMutex
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Trial license file not found.
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Releasing mutex: TrialMutex
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Attempting to acquire mutex: ClientMutex
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Waiting for mutex: ClientMutex
15 May 2013 07:59:53,929 [10] INFO ClientLicense - Server Process detected. Paid License loaded successfully.
15 May 2013 07:59:53,929 [10] INFO LicenseManager - Client license initialized.
15 May 2013 07:59:53,929 [10] INFO LicenseManager - LoadClientLicense: Service process detected - Skipping refresh.
15 May 2013 07:59:53,929 [10] INFO LicenseManager - Releasing mutex: ClientMutex
15 May 2013 07:59:54,054 [StartServiceHost] INFO LicenseManager - Initialization of license manager complete, proceeding with plugin license initialization: XS
15 May 2013 07:59:54,054 [StartServiceHost] INFO ScannerManager - dataCollectionEnabled: True
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded ZipTextExtractor from ZipTextExtractor.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Plugin RarTextExtractor not found
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded StellentTextExtractor from StellentTextExtractor.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.FilesScanner from X1.FilesScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.OutlookScanner from X1.OutlookScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.ImapScanner from X1.ImapScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.SharepointScanner from X1.SharepointScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.X1ServerScanner from X1.X1ServerScanner.dll
15 May 2013 07:59:54,116 [StartServiceHost] INFO PluginProvider - PluginProvider Created
Service log below, if it helps.
15 May 2013 05:42:59,009 [StartServiceHost] INFO X1Service - Ver:5000fg 64bit
15 May 2013 05:42:59,025 [StartServiceHost] INFO X1Service - Running from W:\X1 Index Apr 2013\X1 Search
15 May 2013 05:42:59,025 [StartServiceHost] INFO X1Service - Product name: X1 Search
15 May 2013 05:42:59,384 [StartServiceHost] INFO LicenseManager - Initializing the license manager
15 May 2013 05:42:59,384 [StartServiceHost] INFO LicenseManager - Subscribing to shared cache events for license reloading...
15 May 2013 05:42:59,384 [StartServiceHost] WARN LicenseManager - Blocking license initialization until license manager initialized: XS
15 May 2013 05:42:59,399 [10] INFO LicenseManager - Attempting to acquire mutex: TrialMutex
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Trial license file not found.
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Releasing mutex: TrialMutex
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Attempting to acquire mutex: ClientMutex
15 May 2013 05:42:59,462 [10] INFO LicenseManager - Waiting for mutex: ClientMutex
15 May 2013 05:42:59,524 [10] INFO ClientLicense - Server Process detected. Paid License loaded successfully.
15 May 2013 05:42:59,524 [10] INFO LicenseManager - Client license initialized.
15 May 2013 05:42:59,524 [10] INFO LicenseManager - LoadClientLicense: Service process detected - Skipping refresh.
15 May 2013 05:42:59,524 [10] INFO LicenseManager - Releasing mutex: ClientMutex
15 May 2013 05:42:59,649 [StartServiceHost] INFO LicenseManager - Initialization of license manager complete, proceeding with plugin license initialization: XS
15 May 2013 05:42:59,649 [StartServiceHost] INFO ScannerManager - dataCollectionEnabled: True
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded ZipTextExtractor from ZipTextExtractor.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Plugin RarTextExtractor not found
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded StellentTextExtractor from StellentTextExtractor.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.FilesScanner from X1.FilesScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.OutlookScanner from X1.OutlookScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.ImapScanner from X1.ImapScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.SharepointScanner from X1.SharepointScanner.dll
15 May 2013 05:43:04,781 [StartServiceHost] INFO PluginProvider - Loaded X1.X1ServerScanner from X1.X1ServerScanner.dll
15 May 2013 05:43:04,812 [StartServiceHost] INFO PluginProvider - PluginProvider Created
15 May 2013 07:59:47,708 [StartServiceHost] INFO X1Service - Ver:5000fg 64bit
15 May 2013 07:59:47,708 [WatchForShutdown] INFO X1UILauncher - Launch hotkey set to default Ctrl-Ctrl
15 May 2013 07:59:47,724 [StartServiceHost] INFO X1Service - Running from W:\X1 Index Apr 2013\X1 Search
15 May 2013 07:59:47,724 [StartServiceHost] INFO X1Service - Product name: X1 Search
15 May 2013 07:59:47,724 [WatchForShutdown] INFO X1UILauncher - Registered keyboard hook for Ctrl-Ctrl
15 May 2013 07:59:47,724 [WatchForShutdown] INFO ShutdownWatcher - Watcher is running
15 May 2013 07:59:47,942 [StartServiceHost] INFO LicenseManager - Initializing the license manager
15 May 2013 07:59:47,942 [StartServiceHost] INFO LicenseManager - Subscribing to shared cache events for license reloading...
15 May 2013 07:59:47,958 [StartServiceHost] WARN LicenseManager - Blocking license initialization until license manager initialized: XS
15 May 2013 07:59:47,958 [10] INFO LicenseManager - Attempting to acquire mutex: TrialMutex
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Trial license file not found.
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Releasing mutex: TrialMutex
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Attempting to acquire mutex: ClientMutex
15 May 2013 07:59:47,989 [10] INFO LicenseManager - Waiting for mutex: ClientMutex
15 May 2013 07:59:53,929 [10] INFO ClientLicense - Server Process detected. Paid License loaded successfully.
15 May 2013 07:59:53,929 [10] INFO LicenseManager - Client license initialized.
15 May 2013 07:59:53,929 [10] INFO LicenseManager - LoadClientLicense: Service process detected - Skipping refresh.
15 May 2013 07:59:53,929 [10] INFO LicenseManager - Releasing mutex: ClientMutex
15 May 2013 07:59:54,054 [StartServiceHost] INFO LicenseManager - Initialization of license manager complete, proceeding with plugin license initialization: XS
15 May 2013 07:59:54,054 [StartServiceHost] INFO ScannerManager - dataCollectionEnabled: True
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded ZipTextExtractor from ZipTextExtractor.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Plugin RarTextExtractor not found
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded StellentTextExtractor from StellentTextExtractor.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.FilesScanner from X1.FilesScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.OutlookScanner from X1.OutlookScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.ImapScanner from X1.ImapScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.SharepointScanner from X1.SharepointScanner.dll
15 May 2013 07:59:54,069 [StartServiceHost] INFO PluginProvider - Loaded X1.X1ServerScanner from X1.X1ServerScanner.dll
15 May 2013 07:59:54,116 [StartServiceHost] INFO PluginProvider - PluginProvider Created