Inquiry about Errors in MakeCode

Hello,

In our classroom, we use original teaching materials created with MakeCode. On Saturday morning (Japan time), we encountered the following issue.
After pressing the C key and then the start button (▷) at the bottom right, the following message appeared:

"Extension Error
It seems there are some errors with the extensions added to this project. What would you like to do?
- Try to fix
- Open anyway"

This bug prevented any improvement, regardless of which button was pressed, and the same issue was reported in other classrooms as well. Upon reviewing the code, we found a syntax error and made the following correction, which resolved the issue.

Before correction:
export function teleportToPlayer(): void {
return agent.teleportToPlayer();
}

After correction:
export function teleportToPlayer(): void {
agent.teleportToPlayer();
}

However, after making this correction, the same error was reported again around 6 PM.
When I checked on my PC (MacOS 26) around 4 PM, the results were as follows:
- Version 1.19.52: Error occurred
- Version 1.20.13: Error occurred
- Version 1.21.92 (latest): No error occurred
However, another classroom reported the same error occurring even with version 1.21.92 around 6:30 PM, and we are currently unable to determine the cause.

I would like to inquire about the following regarding MakeCode's specifications:
1. Has there been any recent change in specifications (such as changes in function types like in this case)?
2. Is there any announcement regarding updates to the specifications?
3. If there are announcements about updates, where can we find this information?
4. Is there a possibility that the difference between versions 1.20 and 1.21 could lead to errors occurring or not occurring, and could this mean that versions prior to 1.20 may no longer function properly?

I would appreciate your response to these questions.
Thank you very much for your assistance.

Rei Matsuoka

October 21, 2025 09:35
Report a Concern

I have an update for you.
We have temporarily worked around the bug.
- It seems that the pre-fix program remained in the history, and despite applying the fix, there were devices where it wasn't reflected.- Pressing the reset button and reopening the screen fixed the cache issue (refer to the button in the first image).- However, this method is a temporary workaround and is complicated for users.

Therefore, I would like to know either ① a way to ensure that the MakeCode fixes are applied in classrooms where the materials are provided, or ② an alternative method to address the issue without using the reset button.
Recently, a release feature has apparently been added to MakeCode (as seen in the second image, it wasn't there before but suddenly appeared recently).

If any part of this feature could solve issue ①, please let me know.At this point, we only have a temporary workaround, so I would like to know a permanent solution.

Danny Support Agent

October 21, 2025 17:21

Hey there,

Thanks for sharing your experience, and sorry about those MakeCode issues you are running into.

I will check with the team and let you know any updates as they come!

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