DNN 4.5.3, Blog 3.3.0

blog has been working fine for weeks.  now no one can add an entry.  this issue spans all blog instances in all portals within one DNN instance.  Event viewer err is below:

ModuleId: 910
ModuleDefId: 99
FriendlyName: Edit Entry
ModuleControlSource: DesktopModules/Blog/EditEntry.ascx
AssemblyVersion: 04.05.03
PortalID: 18
PortalName: My Blog
UserID: 2
UserName: admin
ActiveTabID: 371
ActiveTabName: Home
RawURL: /Home/tabid/371/ctl/Edit_Entry/mid/910/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://myblog.myblogsite.com/Home/tabid/371/ctl/Edit_Entry/mid/910/Default.aspx
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; Media Center PC 2.8; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: c9a03fdd-1670-4c12-b0b4-34828cb04c8c
InnerException: The server tag is not well formed.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.UI.TemplateParser.ProcessError
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: The server tag is not well formed. ---> System.Web.HttpParseException: The server tag is not well formed. ---> System.Web.HttpException: The server tag is not well formed.at System.Web.UI.TemplateParser.ProcessError(String message)at System.Web.UI.TemplateParser.DetectSpecialServerTagError(String text, Int32 textPos)at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)--- End of inner exception stack trace ---at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)at System.Web.UI.TemplateParser.ParseFile(String physicalPath, VirtualPath virtualPath)at System.Web.UI.TemplateParser.ParseInternal()at System.Web.UI.TemplateParser.Parse()at System.Web.Compilation.BaseTemplateBuildProvider.get_CodeCompilerType()at System.Web.Compilation.BuildProvider.GetCompilerTypeFromBuildProvider(BuildProvider buildProvider)at System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders()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.UI.TemplateControl.LoadControl(VirtualPath virtualPath)at System.Web.UI.TemplateControl.LoadControl(String virtualPath)at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings)--- End of inner exception stack trace ---
Source: