Weird “invalid serialized file header” Bug Fixed (Sort of. It’s at least better than what we did before) The Bug In the last post I talked about the weird Unity serialization bug that ruined all of Tuesday night, and which we were only able to avoid by sticking with an old revision of the material. Apr 27, 2018 Download Latest Unity. Rules and Wiki. Please refer to our Wiki before posting! Devlog Update #275 - Weird 'invalid serialized file header' Bug I've recently fallen into a particular routine (this always happens right before a big convention, and PSX is. Invalid Serialized File Header Unity Willy Werkel Download Adobe Indesign Cs5 5 Activator Windows Kr Do Beda Paar Bhajan Mp3 Download Free Biology Dictionary For Java Offline Downloader 4.2 Crack Aisc Steel Manual Shapes For Kids Ultraiso Premium Edition 10.6.3.2836 Multilingual Serial Key. Unity terrain problem in lowering terrain and applying paint texture - Duration: 7:41. Alfonso Saballett 3,461 views. The New Terrain Editor in Unity 2018.3 - Duration: 43:20.
Invalid Serialized File Header Unity
Nov 15th, 2017
Invalid Serialized File Header Unity Point
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- (Filename: C:buildslaveunitybuildRuntime/Serialize/SerializedFile.cpp Line: 745)
- [ Failed ] 0.000939 seconds
- Invalid serialized file header. File: 'library/assetdatabase3'.
- (Filename: C:buildslaveunitybuildRuntime/Serialize/SerializedFile.cpp Line: 745)
- Invalid serialized file header. File: 'library/assetdatabase3'.
- (Filename: C:buildslaveunitybuildRuntime/Serialize/SerializedFile.cpp Line: 745)
- Audio: FMOD Profiler initialized on port 54900
- AssetDatabase consistency checks..Rebuilding GUID cache .. Rebuiling GUID cache: Deleting metadata library/metadata/00/00000000000000008000000000000000 because it is an invalid meta data file!
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Someone asked me if I could extract some images from a popular Chinese mobile game. I accepted the challenge, but things were far more complicated than I expected.
What I knew
- This game is Unity3D-based.
- Original assets were encrypted with known algorithm and key. DISCLAIMER: I will not tell you details about encryption.
The story began
I thought I could extract assets I needed with existing tools (e.g. Disunity) but I was proved wrong. Disunity has been refactored, and remaining work is still in progress (at least the moment I write this article). Since resource extraction has not been implemented at this moment, Disunity couldn’t be my choice.
Then I turned to a tool called Unity Assets Bundle Extractor. It did a great job extracting resources I needed graphically. However, acquiring thousands of texture assets from 2000+ isolated files is not an easy job. I tried the command line support but failed (maybe I was too stupid).
Luckily this toolkit provides some API and documentation. Since it was compiled with Microsoft Visual C++ 2010, I was unable to use it directly(C++ ABI constantly changes with every MSVC release). And I was too lazy to write a C wrapper for P/Invoke. But these C++ header files point to a perfect solution – parse file and implement my own UnityFS parser/reader.
Special thank to the UABE project – without these generous header, I would not be able to implement my own parsing and compose this article.
UnityFS
![Unity serialized field Unity serialized field](https://williamchyr.com/wp-content/uploads/2016/02/serialization_bug_001.png)
UnityFS was a new asset bundle format introduced in Unity 5. I am not a Unity3D developer, and I absolutely didn’t know why Unity introduce a new bundle format. But anyway, let’s analyze it.
Things you need to know
- UnityFS is just bundle of several Unity assets. Each asset contains a collection of serialized Unity objects (e.g. 2D texture, text resources, scene objects, etc.).
- UnityFS follows a standard Unity file header structure. Let’s call it AssetsBundleHeader06
- You have to parse asset files in order to extract what you need. There’s bunch of documentation about this. Look into the old Disunity source code for some idea.
Sonnox oxford crack. So the header goes like this. There’s a DWORD flags data that matters – it contains some critical information required for decompression and directory parsing. The rule goes like this:
Unity Serialized Field
- (Flags & 0x3F) is compression mode. 0 means no compression, 1 means LZMA and 2/3 means LZ4/LZ4HC.
- (Flags & 0x40) says whether the bundle has directory info.
- (Flags & 0x80) says whether the block and directory list is at the end of this bundle file.
C# provides a good BinaryReader that makes things a bit easy. But it can be improved for better Null-terminated String and Big Endian support. Be careful with endianness. Unity utilizes both Big Endian and Little Endian in a single file and personally I didn’t get this. For the sake of convenience, I extended the original BinaryReader for these support. Length of each data type matters – but that’s a basic stuff for CS students.
Compression
UnityFS uses optional block-based compression for streaming (you can read a specific bundle without downloading the whole file). Both LZMA and LZ4* (LZ4Hc, etc.) are supported. The Unity’s proprietary parser and Disunity respects this design. But I just wanted these bundle files, so I decided to read all blocks at once and decompress into a single memory stream. Infinite flight simulator hack apk.
Invalid Serialized File Header Unity Church
Decompressed size should match what you get. If not, something must happened.
Unity Serialized Reference
You can implement your own block-based reader – but my time budget didn’t allow me to do this.
There we go…block and file information!
Following a unknown 16 bytes block, there’s a Big-Endian UInt32 value represents block count in a single package. Each block information contains a Big-Endian UInt32 decompressed size, a Big-Endian UInt32 compressed size and a flag that we might not interested in.
Then a BE UInt32 value represents file count in a single package. Each file information contains file offset we need(BE UInt64), the decompressed size(BE UInt64), a BE UInt32 flag and a Null-Terminated string of file name.
Parse your assets now
With sufficient information we retrieved, we were able to extract raw asset files from a UnityFS bundle. Then what you need is search the Internet for ideas of extracting objects(text resources, 2D texture, etc.) from Unity assets. Good luck on exploring!
Conclusion
In this article, we discussed structure and parsing of UnityFS resource bundle file. For more information about UnityFS and Unity asset files, please research these projects I mentioned in this article.