Just wondering if anyone has seen this error before? Using Tim's improved media picker, and if I try to insert a new image into the RTE directly from the pop up (As in clicking on the create new tab, selecting the file etc..) as soon as I click save the file is uploaded and saved but then I get presented with the following screen?

Server Error in '/' Application.
Input string was not in a correct format.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.FormatException: Input string was not in a correct format.

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: 

[FormatException: Input string was not in a correct format.]
   System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +10161267
   System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +207
   umbraco.editorControls.uploadField.Save() +2452
   umbraco.dialogs.uploadImage.Page_Load(Object sender, EventArgs e) +931
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42
   System.Web.UI.Control.OnLoad(EventArgs e) +132
   umbraco.BasePages.BasePage.OnLoad(EventArgs e) +21
   System.Web.UI.Control.LoadRecursive() +66
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428








Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927

However the file has uploaded fine, if I close the pop up and re-open I can select it in the normal way?