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)