I had a DNN v5.01.02 site that was just upgraded to DNN v5.01.04 this morning.  It is pretty vanilla, with one exception.  I have Active Social loaded on it.

I cannot view any of the pages in the Host menu.  They all give me this error:

ModuleId: 345
ModuleDefId: 94
FriendlyName: Extensions
ModuleControlSource: DesktopModules/Admin/Extensions/Extensions.ascx
AssemblyVersion: 5.1.4
PortalID: 0
PortalName: [REMOVED]
UserID: 1
UserName: [REMOVED]
ActiveTabID: 36
ActiveTabName: Extensions
RawURL: /tabid/36/portalid/0/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://[REMOVED]/Default.aspx?tabid=37&error=Property+accessor+%27ShortFileName%27+on+object+%27DotNetNuke.Modules.Dashboard.Components.Database.DbFileInfo%27+threw+the+following+exception%3a%27StartIndex+cannot+be+less+than+zero.%0d%0aParameter+name%3a+startIndex%27&content=0
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 GTB5 (.NET CLR 3.5.30729)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: af8353b7-622e-4e0b-ba5f-a408086403ca
InnerException: External component has thrown an exception.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.Compilation.AssemblyBuilder.Compile
StackTrace:
Message:
DotNetNuke.Services.Exceptions.ModuleLoadException: External component has thrown an exception. --->
System.Web.HttpCompileException: External component has thrown an exception. at
System.Web.Compilation.AssemblyBuilder.Compile() at System.Web.Compilation.BuildProvidersCompiler.PerformBuild() at
System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at
System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at
System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at
System.Web.Compilation.BuildManager.GetVPathBuildResult(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at
System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at
System.Web.UI.TemplateControl.LoadControl(String virtualPath) at
DotNetNuke.UI.ControlUtilities.LoadControl[T](TemplateControl containerControl, String ControlSrc) at
DotNetNuke.UI.Modules.ModuleHost.LoadModuleControl()
--- End of inner exception stack trace ---
Source:
Server Name: [REMOVED]

Any ideas?