Illustratorについて質問です。特定のファイルが開いたら真っ白になってしまいます。

ちょっと時間が立っているので、解決していればよいのですが、レスポンスが無いようなので追記しておきます。

基本的にM. Ufuk Korkusuzさんの提示した対応を確認するとよいのですが、それで解決しない場合、アプリケーション自体のアンインストールからの再インストールを試してみる価値はあります。
念のため、トラブルシューティングの日本語のドキュメントも提示しておきましょう。

https://helpx.adobe.com/jp/illustrator/kb/basic-trouble-jp.html

基本的に特定のドキュメントのみこういった状態となる場合、ドキュメント自体が壊れている可能性が高くなります。PDF互換で保存されていない場合、リカバリーは難しいでしょう。
１点、気になることなのですが、環境設定の「バックグラウンド保存」を有効にしていませんか？
これはデータを破壊してしまうことがありますのでOFFに設定しておくようにして下さい。

Hi ​@yamaki@daisen21.co.jp,

Thanks for reaching out, and I'm sorry for the trouble you're experiencing.

Could you please try opening the file using Illustrator's Content Recovery Mode and see if it helps recover the artwork? You can find the steps here: Repair damaged Illustrator documents | Illustrator

Also, please try creating a new Illustrator document and use File > Place to place the affected ‘.ai’ file instead of opening it directly. If possible, I'd also recommend testing the file on another Mac running the same Illustrator version. This will help determine whether the issue is specific to the file or related to the current system environment.

If the issue still persists, could you please share the affected .ai file with us? If it's confidential, you can send it via Direct Message using a file-sharing service such as Google Drive, Dropbox, or a similar platform. We'll be happy to investigate it further.

Abhishek
 

The fact that the same thing happens with a Time Machine backup from several days ago makes me think it’s worth checking whether this is an Illustrator/environment issue rather than just a problem with the file itself.

A few things I’d try first:

• Open the file on another Mac (or from a different macOS user account) to see if the behavior is the same.
• Reset Illustrator’s preferences and test the file again.
• Switch to View > Preview on CPU to rule out a GPU rendering issue.
• Check File > Recover Documents in case Illustrator has a recoverable version available.

Adobe also has a few troubleshooting articles that may help:

• Reset preferences: https://helpx.adobe.com/illustrator/kb/preference-file-settings.html
• Recover Illustrator files: https://helpx.adobe.com/illustrator/using/recover-files-after-crash.html
• General Illustrator troubleshooting: https://helpx.adobe.com/illustrator/kb/troubleshoot-crash-issues.html

One thing that caught my attention is that the document thumbnail is still visible on the Home screen before opening the file, but the document itself opens as a blank artboard. That could mean the preview data is still present, while Illustrator is failing to load the actual artwork.

A few additional details would help narrow it down:

• Which version of macOS are you using?
• Is this an Intel Mac or an Apple Silicon (M-series) Mac?
• What is the file size in Finder? Has it remained about the same, or is it unusually small?
• Do other Illustrator files open normally?
• Is the file stored locally or on a cloud service such as iCloud Drive, Dropbox, OneDrive, or Creative Cloud Files?

Those details should make it easier to determine whether this is a document issue or something specific to the Illustrator installation or system.