docking manager, argumentoutofrangeexception

Hey all! This is a tricky one. Basically, all our apps that use the docking manager have a button that when clicked tells the docking manager to open up the respective panel. 99% of the time everything works fine, but once in a while a system.argumentoutofrangeexception is thrown, the full details for which are down below. I don''t think this was happening before we converted to version 4.102.0.62 from version 3.X.X.X Any ideas? Many thanks GA {"Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index"} " at System.Collections.ArrayList.get_Item(Int32 index)\r\n at Syncfusion.Windows.Forms.Tools.TabPageAdvCollection.get_Item(Int32 index)\r\n at Syncfusion.Windows.Forms.Tools.AHTabControl.MFMouseMessageHandler(Point ptscreen)\r\n at Syncfusion.Windows.Forms.Tools.DockingManager.GetMsgProc(Int32 nCode, IntPtr wparam, IntPtr lparam)\r\n at Syncfusion.Windows.Forms.Tools.Design.ThreadHooks.GetMsgProcedure(Int32 ncode, IntPtr wparam, IntPtr lparam)\r\n at System.Windows.Forms.UnsafeNativeMethods.PeekMessage(MSG& msg, HandleRef hwnd, Int32 msgMin, Int32 msgMax, Int32 remove)\r\n at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)\r\n at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)\r\n at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)\r\n at System.Windows.Forms.Application.Run(Form mainForm)\r\n at Fox.Fbc.Pace.AdSales.PL.AdSalesClient.MainForm.Main() in C:\\Code\\Application\\FOX\\FBC\\Pace\\AdSales\\1.1\\PL\\AdSalesClient\\MainForm.cs:line 585\r\n at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)\r\n at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)\r\n at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()\r\n at System.Threading.ThreadHelper.ThreadStart_Context(Object state)\r\n at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)\r\n at System.Threading.ThreadHelper.ThreadStart()"

Hi Giancarlo, Sorry for the inconvenience caused.I was able to reproduce the issue here and have created a bug report regarding the same.We will try to address the issue as soon as possible.Here is the link to track progres of fix online. Defect #1874 - ArgumentOutOfRangeException raising ,when we activate (showing autohidden control) a hidden control Thanks for reporting this issue. Regards, Joy

Hi Giancarlo, We have fixed the defect 1874.Our next patch release will contain the fix. Regards, Joy