Error exporting a theme

Hi I'm getting this error when I export my theme, no iRacing running and no scripts inside, if I save a few times the theme finally is exported.

I attach the log file

Error: 10/11/2019 4:51:13 PM (UTC)
Unhandled exception
System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.IO.MemoryStream.set_Capacity(Int32 value)
   at System.IO.MemoryStream.EnsureCapacity(Int32 value)
   at System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count)
   at System.Security.Cryptography.CryptoStream.Write(Byte[] buffer, Int32 offset, Int32 count)
   at ATVO.ThemeEditor.ViewModels.MainMenuViewModel.OnExport() in D:\Users\Nick\Documents\Programming\ATVO\Appgineer.in-TV-Overlay-for-iRacing\ATVO.ThemeEditor\ViewModels\MainMenuViewModel.cs:line 557
   at Prism.Commands.DelegateCommand.<>c__DisplayClass1_0.<.ctor>b__0(Object o)
   at Prism.Commands.DelegateCommandBase.<>c__DisplayClass6_0.<.ctor>b__0(Object arg)
   at Prism.Commands.DelegateCommandBase.<Execute>d__15.MoveNext()
--- End of stack trace from previous location where exception was thrown ---

Your theme is too large. Do you have any big videos or something that blows up the size? Try reducing their size. I think around 500 MB was the maximum I managed to export but it may depend on your system.

I have only the replay and live videos (1 sec each) 2 gifs and all the other images are in png my .adt file is near 60-70mb