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Needs More Info

Template Export: file_stream_device iostream stream error

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I try to export a graphical template with essential graphics. New Project, I add just a color layer and add the scaling as a editable option.

When I hit export as template this appears:

Import and export

M

mm_9460

Participant

My solution is to modify the environment variables, My Computer Properties, Advanced Options Environment Variables, change the TEMP path to another drive, create a document TEMP in the other drive letter, fill in the path, modify it successfully and solve it perfectly

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M

mm_9460

Participant

我的解决方法是修改环境变量、My Computer Properties、Advanced Options Environment Variables，将 TEMP 路径更改为另一个驱动器，在另一个驱动器号中创建文档 TEMP，填写路径，修改成功并完美解决

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M

mm_9460

Participant

After Effects警告: file_stream_device: failed to open file for writing: iostream stream error

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T

Takahiro31908473ip9j

Participant

Yo, bro!

It seems that Adobe After Effects 2025 has a bug that prevents exporting Motion Graphics Templates (.mogrt).
Even after trying various methods such as clearing the cache and resetting preferences, I was unable to export .mogrt files using the 2025 version.

Therefore, I decided to downgrade to an older version of After Effects.

Using the Creative Cloud Desktop app, I downloaded After Effects 2024, then launched the 2025 version and saved a copy of the project in 2024.x format.
After opening that copy in After Effects 2024, I was finally able to export it as a Motion Graphics Template.

Take it easy!
Safe travels

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C

clemence313208361qy4

Participant

Hi, I have the same exact issue ! Hope there will be a solution

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E

eunchong28861383wq3a

Participant

When exporting a motion graphics template,
the following error occurs and it is not saved.

=================================================

file_stream_device: failed to open file for writing: iostream stream error

=================================================

Even if I put in just one source text, the same error occurs.

Even if I try the latest update or migrate, it is the same.

I am not using any plugins,
and I am using the Windows version.

My computer specifications are
i9-14900K
GeForce RTX 4060

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nishu_kush

Legend

Hi @eunchong28861383wq3a, thanks for writing in.

Others have reported this issue. I am merging your thread with another one related to the same issue. For further investigation, do you mind sharing .AEP file for testing? Feel free to share it via DM if you do not want to share it publicly.

We're here to help.

Thanks,
Nishu

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Z

zoe_5980

Participant

I am getting the same issue as well. Has anyone been able to solve it?

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F

franzj13859080Author

Participant

1. Windows 10 Home, Intel i7 8700K, 32 GB RAM, Intel UHD Graphics 630 + Geforce RTX 2070
2. 25.2.2
3. No other result. I can save the project, but no template export.
Here it is: https://we.tl/t-kKpuS7pl5o
4. Yes

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F

franzj13859080Author

Participant

No other result. I can save the project, but no template export.

Here it is: https://we.tl/t-kKpuS7pl5o

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J

Jude Lloyd_Binas1595

Participant

Is it fixed? If yes, how did you do it. I am currently facing the same issue.

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