Each time I start Logos 4 on my desktop, I get this error message:
"Logos Bible Software 4 Indexer has stopped working"
I don't see any problems on my laptop. Any idea what's going on?

I've enabled logging and here's the log output:
2009-11-03 22:41:22.8996 1 Info Program Starting application (version 4.0.3.2492).
2009-11-03 22:41:22.9583 1 Info UserManager Opening UserManager in C:\Users\<username>\AppData\Local\Logos4\Users.
2009-11-03 22:41:22.9652 1 Info LocalFileDatabase Found existing database at C:\Users\<username>\AppData\Local\Logos4\Users\UserManager.db
2009-11-03 22:41:23.0894 1 Info Program Processing existing commands.
2009-11-03 22:41:23.0894 1 Info Program Setting status to PreparingLibrary
2009-11-03 22:41:23.0894 1 Info Program Creating digital library services.
2009-11-03 22:41:23.1158 1 Info DigitalLibraryServices Initializing DigitalLibraryServices. (Shared Folder= C:\Users\<username>\AppData\Local\Logos4\Shared, Data Folder = C:\Users\<username>\AppData\Local\Logos4\Data\<random>, Documents Folder = C:\Users\<username>\AppData\Local\Logos4\Documents\<random>)
2009-11-03 22:41:23.1344 5 Info DigitalLibraryServices (Timed) Creating update manager.
2009-11-03 22:41:23.1344 5 Info DigitalLibraryServices (Timed) Creating license manager.
2009-11-03 22:41:23.1344 5 Info LicenseManager Opening LicenseManager in C:\Users\<username>\AppData\Local\Logos4\Data\<random>\LicenseManager; products folder is C:\Users\<username>\AppData\Local\Logos4\Shared\Products
2009-11-03 22:41:23.1344 5 Info LocalFileDatabase Found existing database at C:\Users\<username>\AppData\Local\Logos4\Data\<random>\LicenseManager\Products.db
2009-11-03 22:41:23.1696 5 Info DigitalLibraryServices (31ms) Creating license manager.
2009-11-03 22:41:23.1696 5 Info DigitalLibraryServices (Timed) Creating resource manager.
2009-11-03 22:41:23.1696 5 Info DigitalLibraryServices (Timed) Creating data type options.
2009-11-03 22:41:23.1696 5 Info DigitalLibraryServices (2ms) Creating data type options.
2009-11-03 22:41:23.1891 5 Info LocalFileDatabase Found existing database at C:\Users\<username>\AppData\Local\Logos4\Data\<random>\ResourceManager\ResourceManager.db
2009-11-03 22:41:23.4590 5 Info LocalFileDatabase Found existing database at C:\Users\<username>\AppData\Local\Logos4\Documents\<random>\ResourceManager\ResourceSyncManager.db
2009-11-03 22:41:23.4639 5 Info DigitalLibraryServices (290ms) Creating resource manager.
2009-11-03 22:41:23.4639 5 Info UpdateManager Initializing update manager.
2009-11-03 22:41:23.4639 5 Info LocalFileDatabase Found existing database at C:\Users\<username>\AppData\Local\Logos4\Data\<random>\UpdateManager\Updates.db
2009-11-03 22:41:23.4825 5 Info DigitalLibraryServices (353ms) Creating update manager.
2009-11-03 22:41:23.5089 1 Info Program Setting notification icon tool tip to: Logos Bible Software is downloading updates
2009-11-03 22:41:23.5324 5 Info DigitalLibraryServices (Timed) Creating download manager.
2009-11-03 22:41:23.5324 5 Info DownloadManager Opening Download Manager in C:\Users\<username>\AppData\Local\Logos4\Data\<random>\DownloadManager.
2009-11-03 22:41:23.5324 5 Info LocalFileDatabase Found existing database at C:\Users\<username>\AppData\Local\Logos4\Data\<random>\DownloadManager\DownloadManager.db
2009-11-03 22:41:23.5432 5 Info DigitalLibraryServices (9ms) Creating download manager.
2009-11-03 22:41:23.5432 5 Info Program There are 0 updates downloading (out of a maximum of 4); starting a new job (from 39 queued updates).
2009-11-03 22:41:23.5617 5 Error Program Unhandled exception: System.ArgumentException: A DownloadJob for the update already exists.
Parameter name: update
at Libronix.DigitalLibrary.UpdateManager.CreateDownloadJob(DownloadManager downloadManager, DownloadableUpdate update)
at LDLS4.Indexer.Program.StartNewDownloadJobs()
at LDLS4.Indexer.Program.MonitorDownloadJobs(IWorkState state, DownloadData data)
at Libronix.Utility.Threading.WorkStateThreadOwner`1.ThreadProc(Object objData)
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart(Object obj)