[BUG] Blob Downloads Failing

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[BUG] Blob Downloads Failing in Violentmonkey

Violentmonkey is a popular userscript manager for browsers, allowing users to run custom scripts on web pages. However, some users have reported a bug in Violentmonkey versions from v2.19.1 onwards, where blob downloads fail to complete successfully. In this article, we will delve into the issue, explore possible causes, and provide a solution to resolve the problem.

The issue arises when using a popular script to download media from forum posts, specifically the ForumPostDownloader script. This script works fine on Violentmonkey versions up to v2.19.0 but fails on versions from v2.19.1 onwards. The script reports download progress correctly, but upon completion, the Downloads tab displays a "Failed - Network error" message for the downloaded file.

The expected result is for the files to download successfully, just like in Violentmonkey versions prior to v2.19.1. The script should be able to download media from forum posts without any issues.

When inspecting the Devtools console, the following error message is displayed:

DevTools failed to load source map: Could not load content for chrome-extension://nadnpjgimpifhleepiifbigliapacblb/FileSaver.min.js.map: System error: net::ERR_BLOCKED_BY_CLIENT

This error message suggests that there is an issue with loading the source map for the FileSaver.min.js file, which is a library used by Violentmonkey for handling file downloads.

The issue has been reported on the following environment:

  • OS: Windows
  • Browser: Chrome/Brave (Latest)
  • Violentmonkey Version: v2.19.1++

Based on the information provided, the possible causes of this issue are:

  • Bug in Violentmonkey: The issue may be caused by a bug in Violentmonkey, specifically in the file download handling mechanism.
  • Conflict with other scripts: The issue may be caused by a conflict with other scripts running on the same page, which could be interfering with the file download process.
  • Browser or OS issue: The issue may be caused by a browser or OS issue, such as a problem with the file system or the browser's download handling mechanism.

To resolve this issue, you can try the following solutions:

  • Downgrade Violentmonkey: Downgrade Violentmonkey to a version prior to v2.19.1, which should resolve the issue.
  • Use a different script: Try using a different script for downloading media from forum posts, which may not be affected by the issue.
  • Disable other scripts: Disable other scripts running on the same page to see if they are causing the conflict.
  • Clear browser cache: Clear the browser cache to see if it resolves the issue.

The blob downloads failing issue in Violentmonkey is a frustrating problem that can prevent users from downloading media from forum posts. By understanding the possible causes and solutions, users can take steps to resolve the issue and continue using Violentmonkey without any problems.

  • Related issues: The issue may be related to other issues, such as #2168 and #2123, which are also reported on the Violentmonkey GitHub page.
  • Violentmonkey releases: The latest Violentmonkey releases can be found on the Violentmonkey GitHub page, which may include fixes for this issue.

In our previous article, we explored the issue of blob downloads failing in Violentmonkey versions from v2.19.1 onwards. In this article, we will provide a Q&A section to address some of the most frequently asked questions related to this issue.

A: The cause of the blob downloads failing issue in Violentmonkey is still unknown, but it is believed to be related to a bug in the file download handling mechanism. The issue may be caused by a conflict with other scripts running on the same page or a problem with the browser or OS.

A: To resolve the blob downloads failing issue in Violentmonkey, you can try the following solutions:

  • Downgrade Violentmonkey to a version prior to v2.19.1.
  • Use a different script for downloading media from forum posts.
  • Disable other scripts running on the same page.
  • Clear the browser cache.

A: Yes, the blob downloads failing issue in Violentmonkey may be related to other issues, such as #2168 and #2123, which are also reported on the Violentmonkey GitHub page.

A: Yes, you can download the latest Violentmonkey releases from the Violentmonkey GitHub page. However, please note that the latest releases may not include fixes for this issue.

A: You can report the blob downloads failing issue in Violentmonkey by creating a new issue on the Violentmonkey GitHub page. Please provide as much detail as possible, including the steps to reproduce the issue and any relevant error messages.

A: Yes, there is a workaround for the blob downloads failing issue in Violentmonkey. You can try using a different script for downloading media from forum posts or disabling other scripts running on the same page.

A: Yes, you can get help from the Violentmonkey community to resolve the issue. You can post on the Violentmonkey GitHub page or join the Violentmonkey community forum to ask for help.

The blob downloads failing issue in Violentmonkey is a frustrating problem that can prevent users from downloading media from forum posts. By understanding the possible causes and solutions, users can take steps to resolve the issue and continue using Violentmonkey without any problems.