System.ArgumentException: An item with the same key has already been added.
Author: xordroid-86Created Jul 14, 2026Updated Jul 14, 2026
Note: if you do not provide all of the following information I will directly ignore and close this issue
- Il2CppDumper version Il2CppDumper-win-v6.7.46
- Target Unity version (optional) 2022.3.41f1
- Describe the issue While dumping this pops up:
Initializing metadata...
System.ArgumentException: An item with the same key has already been added. Key: 69
at System.Collections.Generic.Dictionary`2.TryInsert(TKey , TValue , InsertionBehavior )
at System.Linq.Enumerable.ToDictionary[TSource,TKey](TSource[] , Func`2 , IEqualityComparer`1 )
at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 , Func`2 , IEqualityComparer`1 )
at Il2CppDumper.Metadata..ctor(Stream stream) in C:\projects\il2cppdumper\Il2CppDumper\Il2Cpp\Metadata.cs:line 102
at Il2CppDumper.Program.Init(String il2cppPath, String metadataPath, Metadata& metadata, Il2Cpp& il2Cpp) in C:\projects\il2cppdumper\Il2CppDumper\Program.cs:line 123
at Il2CppDumper.Program.Main(String[] args) in C:\projects\il2cppdumper\Il2CppDumper\Program.cs:line 97
Press any key to exit...The game is for Android, it contains ELF64 libil2cpp.so
- Upload executable file and global-metadata.dat global_metadata.dat: https://files.catbox.moe/bjdkih.dat libil2cpp.so: https://files.catbox.moe/4vlo5e.so
Source: Perfare/Il2CppDumper