Could you show us, what it displayed under the button "details"? Also a launcher.log from C:\Program files (x86)\steam\steamapps\common\Skyrim\EnderalLauncher\system\log\ could be helpful to solve this issue.
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt64(String value, NumberStyles options, NumberFormatInfo numfmt)
at System.Convert.ToInt64(String value)
at Launcher_01.formPanUpdate.checkDownloadOrExtractFile()
at Launcher_01.formPanUpdate.btnDownloadUpdate_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.
When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.
btw i attach the launcher log too
thanks for reply, i hope that can help fix the problem
it's persist from the first time i want to tried this mod
To give you a first insight what causes this problem: The Launcher can not find your hard drive to work on, and don't know how much space there is to work with.
Ok, be sure to download the file again after the update, if there is a problem. The update archive contains the old launcher and so this can cause the same problem after the update installation.