An exception as rised when the source image was trying to be accesed:

Raised exception follows:
System.ArgumentException: The path is not of a legal form.
at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
at System.IO.Path.GetFullPathInternal(String path)
at System.IO.FileInfo.Init(String fileName, Boolean checkHost)
at System.IO.FileInfo..ctor(String fileName)
at Icomancer.frmCrafter.btnSaveAll_Click(Object sender, EventArgs e) in H:\Icomancer\Icomancer\frmCrafter.vb:line 1116

Please try running icomancer as administrator. This is a common issue when a folder can't be accessed due to security restrictions.