I built a client's site on a dedicated server with DNN 4.4.  Recently they asked for a seperate Spanish version of the site.  I created a new skin for the Spanish version and created the site as a child portal of the original site.  Everything was working fine until I tried to add some images into any of the text modules.  Then I got the following error.

Error: Enter Title is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: StartIndex cannot be less than zero. Parameter name: startIndex ---> System.ArgumentOutOfRangeException: StartIndex cannot be less than zero. Parameter name: startIndex at System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) at DotNetNuke.Modules.Html.HtmlModule.ManageUploadDirectory(String strHTML, String strUploadDirectory) at DotNetNuke.Modules.Html.HtmlModule.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---

I struggled for a day or so and decided that I would use the FCK Editor instead of the standard Text/HTML editor supplied with the original installation.  After altering the web.config to use the FCK Editor, I tried to add a tiny graphic image and recieved the same error when I hit "update" on the text module.  So I now know that the problem is not with the original module or with the FCK module.

I found the following thread on this forum which sounded similar to my problem but I thought I would make a plea for help before I go wandering wandering around in the code. (I am not a developer).  http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/89/threadid/23110/scope/posts/Default.aspx  
Note: When I created the child portal, I did specified a directory for it to be created in.  The text modules continue to work fine in the host portal and the only thing that I can't do in the child portal's text modules is add images.  In the edit mode, the images appear as expected, but when I update, the text modules break.

Any help is appreciated.