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So I'm trying to make a rom hack of pokemon ultra moon where all battles are changed to double battles and changes to some pokemon to make them more viable. I used Pk3DS to unpack and edit the ROM. I've tried this before but last time when trying to rebuild the rom it would say: 'an unandled exeption has occured' just before closing Pk3DS entirely. I figured that I had done some weird input of some sort but I want to try to look what happened and figured it would be faster to just start fresh. So I got a fresh Ultra Moon ROM, changed some stuff and tried to rebuild it. But the same message occured. I didn't change to much but for some reason pk3ds just crashes when I try to rebuild, it works just fine if I rebuild just the romfs or exefs file. This is the entire message: Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. at pk3DS.Core.CTR.CTRUtil.setNCCH(String EXEFS_PATH, String ROMFS_PATH, String EXHEADER_PATH, String TB_Serial, String LOGO_NAME, ProgressBar PB_Show, RichTextBox TB_Progress) at pk3DS.Core.CTR.CTRUtil.buildROM(Boolean Card2, String LOGO_NAME, String EXEFS_PATH, String ROMFS_PATH, String EXHEADER_PATH, String SERIAL_TEXT, String SAVE_PATH, Boolean trimmed, ProgressBar PB_Show, RichTextBox TB_Progress) at pk3DS.Main.<>c__DisplayClass66_0.<B_Rebuild3DS_Click>b__0() in d:\a\1\s\pk3DS\Main.cs:line 1267 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() Loaded Assemblies: -------------------- mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll pk3DS, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null C:\Users\(my username)\Desktop\pk3DS (2)\pk3DS\pk3DS.exe System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll pk3DS.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null C:\Users\(my username)\Desktop\pk3DS (2)\pk3DS\pk3DS.Core.dll Accessibility, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll -------------------- User Message: An unhandled exception has occurred. The program must now close.

Project Pokémon OP GBATemp OP PokéCommunity OP Reddit /r/3dshacks OP ROM hack of: Pokémon Ultra Sun and Pokémon Ultra Moon (3DS) Pokémon Supernova Sun and Penumbra Moon are mods for Pokémon Ultra Sun and Ultra Moon. Like my Rutile Ruby & Star Sapphire hacks and my Nova Sun & Umbra Moon hacks, their main purpose is to provide a more challenging game experience while not artificially limiting the player. The premier feature of Supernova Sun and Penumbra Moon is the ground-up redesign of Pokémon Trainers in the world to increase the game's challenge. Every trainer in the game has been edited, and the level curve expects use of the Experience Share, which means that the player levels up very quickly. Every Pokémon in Trainers' teams has a a proper moveset and many are holding items. The Elite Four and Champion are Level 100, and the player doesn't need to grind to equal that! Supernova Sun and Penumbra Moon's secondary focus is inspired by Super Smash Bros. Melee's "20XX Hack Pack" which is designed to improve competitive players' ability to practice and grind. In Supernova Sun and Penumbra Moon's Legit Build, everything obtainable is 100% legal and legitimate for real online battles or trades. In all Builds, some features are designed to make preparing competitive teams much less of a hassle. Competitive hold items are much more available, a 6IV Ditto is available through an in-game trade (holding a Destiny Knot), Eggs hatch in one cycle, and Level 100 Memento Blissey battles are available in the Battle Buffet once the main story has been beaten. (As discussed, link removed as it directs to page that host files from ROMs. Please upload files accepted by the forum, thanks )