Posting this because I spent more time on it than I’d like to admit, and I’ve seen others hit the same wall.

The problem

My custom block registered correctly, appeared in the creative tab, but rendered as a missing texture cube.

No errors at runtime, just a purple-black block.

What I checked first

• Registry name was correct

• Blockstate JSON existed

• Model JSON paths looked fine

• Textures were in the right folder

Everything looked correct.

The actual issue

The problem was a mismatch between the blockstate JSON and model file names.

Example mistake:

blockstates/my_block.json
models/block/myblock.json

Forge does not warn you when these names don’t match exactly.

The fix

Make sure naming is consistent everywhere:

• blockstates

• models/block

• models/item

• registry name

Also ensure that:

• JSON files are lowercase

• no extra underscores or hyphens exist

• resource reload cache is cleared

Restarting the client after fixing resource paths helped immediately.

Takeaway

If your block exists but renders wrong, the issue is almost always:

• naming mismatch

• resource path typo

• cached resource reload

Hopefully this saves someone else an hour.

On 1/28/2026 at 9:57 PM, Myroslav Mokhammad Abdelja said:

Posting this because I spent more time on it than I’d like to admit, and I’ve seen others hit the same wall.

The problem

My custom block registered correctly, appeared in the creative tab, but rendered as a missing texture cube.

No errors at runtime, just a purple-black block.

What I checked first

• Registry name was correct

• Blockstate JSON existed

• Model JSON paths looked fine

• Textures were in the right folder

Everything looked correct.

The actual issue

The problem was a mismatch between the blockstate JSON and model file names.

Example mistake:

blockstates/my_block.json
models/block/myblock.json

Forge does not warn you when these names don’t match exactly.

The fix

Make sure naming is consistent everywhere:

• blockstates

• models/block

• models/item

• registry name

Also ensure that:

• JSON files are lowercase

• no extra underscores or hyphens exist

• resource reload cache is cleared

Restarting the client after fixing resource paths helped immediately.

Takeaway

If your block exists but renders wrong, the issue is almost always:

• naming mismatch

• resource path typo

• cached resource reload

Hopefully this saves someone else an hour.

It is honestly impressive how such a tiny naming discrepancy can bring an entire project to a standstill without a single error message to point the way. That silent failure is probably the most frustrating part of Minecraft modding because the game assumes you intentionally pointed the blockstate toward a model that just happens to be missing. Your point about the registry name versus the file names is a classic trap that almost every developer falls into at least once. It is especially tricky because your brain tends to autocorrect the typos while you are proofreading the code, making the mismatch invisible until you step away for a bit.

The fact that Forge or Fabric stays quiet about this is a double edged sword. While it keeps the logs clean, it leaves you hunting through folders for an hour just to realize you missed a single underscore or used a capital letter by mistake. Most people focus on the Java side of the registry and forget that the assets follow their own strict set of rules for the resource manager. Sharing this breakdown is definitely going to save someone from a lot of unnecessary stress. It serves as a great reminder that when the game logic works but the visuals fail, the answer is usually buried in a JSON path or a simple file name.

Are you planning to add any special properties to this block now that the rendering is fixed, or was this just a simple decorative addition?