4.5.2.0 (Only for blender 4.5)

This version is only for Blender 4.5 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

This version brings some changes from Avatar Toolkit, plus memory leak fixes and more.

Fixes to MMD Model Handling

• Removed BatchVertexGroupOperations: Eliminates file handle leaks by switching to the stable, individual processing methods. This also removes the need for the previous Linux workaround.
• Proper resource cleanup: Ensures all resources are released at the end of the fix process, preventing potential crashes on Windows and Linux.
• Early validation checks: Detects issues upfront to avoid wasted processing time.
• Lightweight bone name caching: Significantly improves performance across the entire process.

Armature Merging & Mesh Attachment Improvements

• Optimized NumPy operations for better performance.
• Improved vertex group processing efficiency.
• Consolidated transform validation logic for cleaner, more reliable execution.
• Removed duplicated code, reducing complexity.

This should make Cats for Blender 4.5 a bit faster and much more stable, please report any issues.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.5.1.3 (Only for blender 4.5)

This version is only for Blender 4.5 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

Fixes:

• Fixed an issue on Linux (mainly Wayland sessions) that caused a memory leak when using Fix MMD Model and could crash Blender.

Note: We had to stop using MMD Tools and switch to a native morph conversion method. This may not be as polished, so please give us feedback if you’re on Linux. This change does not affect Windows, which still uses the original method.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.5.1.2 (Only for blender 4.5)

This version is only for Blender 4.5 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

Fixes:

• Fixed an issue with Material Combiner not working, you now must use the master branch of Material combiner. Cats will now inform you of this and download it if you allow it to.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.4.1.4 (Only for blender 4.4)

This version is only for Blender 4.4 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

End of life notice

Cats for Blender 4.2 and 4.4 will no longer get updates after August 20, 2025 please use Blender 4.5 Cats as that will be the only Cats version supported after that data.

Added

• Added End Of Life Notice

Fixes

• Fixed an issue with Material Combiner not working, you now must use the master branch of Material combiner. Cats will now inform you of this and download it if you allow it to.

Note, in Cats for Blender 4.4, the Fix Materials button has been removed.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.2.3.4 (Only for blender 4.2)

This version is only for Blender 4.2 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

End of life notice

Cats for Blender 4.2 and 4.4 will no longer get updates after August 20, 2025 please use Blender 4.5 Cats as that will be the only Cats version supported after that data.

Added

• End of Life Notice

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.5.1.1 (Only for blender 4.5)

This version is only for Blender 4.5 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

Fixes:

• Fixes an traceback users were getting with certain pmx models. Adds an extra check and ensure fix model is in edit mode when it needs to be.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.5.1.0 (Only for blender 4.5)

This version is only for Blender 4.5 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

Added:

• Added a Fbx Import (Test) button to quick access. This enable auto bone orientation to fix some edge cases where models were import folded. The reason this is a test button and not part of the import anything system is because it was known to cause issues before so i want to see if it does before i add it to the import anything system. If it causes issue please report it and just use the normal import button instead.

Fixes:

• Fixed issue with the updater giving a traceback error.
• Fixed issue with Duplicate Bones.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.4.1.3 (Only for blender 4.4)

This version is only for Blender 4.4 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

End of life notice

Cats for Blender 4.2 and 4.4 will no longer get updates after August 20, 2025 please use Blender 4.5 Cats as that will be the only Cats version supported after that data.

Added

• Added a Fbx Import (Test) button to quick access. This enable auto bone orientation to fix some edge cases where models were import folded. The reason this is a test button and not part of the import anything system is because it was known to cause issues before so i want to see if it does before i add it to the import anything system. If it causes issue please report it and just use the normal import button instead.

Note, in Cats for Blender 4.4, the Fix Materials button has been removed.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.2.3.3 (Only for blender 4.2)

This version is only for Blender 4.2 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

End of life notice

Cats for Blender 4.2 and 4.4 will no longer get updates after August 20, 2025 please use Blender 4.5 Cats as that will be the only Cats version supported after that data.

Added

• Added a Fbx Import (Test) button to quick access. This enable auto bone orientation to fix some edge cases where models were import folded. The reason this is a test button and not part of the import anything system is because it was known to cause issues before so i want to see if it does before i add it to the import anything system. If it causes issue please report it and just use the normal import button instead.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.

4.5.0.1 Alpha (Only for blender 4.5)

This version is only for Blender 4.5 if you need another version of blender please go here and look for a version of Cats for your blender version.

DO NOT ASK FOR HELP IN THE OFFICIAL CATS DISCORD SERVER READ BELOW!

PLEASE DO NOT ASK FOR HELP FOR THIS VERSION OF CATS IN THE OFFICIAL CATS DISCORD. THIS CATS IS NOT THE OFFICIAL VERSION SO SUPPORT MAY NOT BE GIVEN IN THEIR DISCORD SERVER. IF YOU HAVE A BUG OR NEED HELP PLEASE START AN ISSUE OR JOIN MY OWN DISCORD SERVER.

Changes:

• MMD Tools have been updated to the latest version.

please note Blender 4.5 is in Alpha and some issues maybe related to Blender 4.5. Please report any issues to us.

If you want to translate Cat's UI or contribute to the internal dictionary you can here.