Created Unassigned: Unable to Browse Server [7859]

I installed version 2.00.14 of the editor on DNN Evoq 7.3.1. When I edit an html module and try to upload an image, I get an error message. Any ideas what might be causing this?

Requested value 'default' was not found.

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.ArgumentException: Requested value 'default' was not found.

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:


[ArgumentException: Requested value 'default' was not found.]
System.EnumResult.SetFailure(ParseFailureKind failure, String failureMessageID, Object failureMessageFormatArgument) +70
System.Enum.TryParseEnum(Type enumType, String value, Boolean ignoreCase, EnumResult& parseResult) +890
System.Enum.Parse(Type enumType, String value, Boolean ignoreCase) +140
WatchersNET.CKEditor.Browser.Browser.Page_Load(Object sender, EventArgs e) +395
System.Web.UI.Control.LoadRecursive() +116
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2718