Hi guys, have a DNN 4.04 install that's been working fine for over a year.
Within the last 2 to 3 days, when navigating between pages within one of our 7 portals, I get the following error randomly, sometimes refreshing helps, sometimes not.
No changes have been made to ANY of the DNN templates/pages themselves, just standard edits using the web-based editor. I have Googled and found nothing for this particular instance, what should I be looking for? Virtual directory changes, database crashes/restarts? I don't know where to begin...
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. |
Stack Trace:
[InvalidOperationException: Collection was modified; enumeration operation may not execute.]
System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) +51
System.Collections.Generic.Enumerator.MoveNext() +1432233
DotNetNuke.Entities.Tabs.TabController.GetTab(Int32 TabId, Int32 PortalId, Boolean ignoreCache) +305
DotNetNuke.Entities.Portals.PortalSettings.GetPortalByTab(Int32 TabID, String PortalAlias) +38
DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +3736
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
|
Server Error in '/' Application.
Collection was modified; enumeration operation may not execute.