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SponsorBlock/DeArrow: Extension storage is full. Please delete some unsubmitted segments in the options. Error: An unexpected error occurred #2480

@VL4DST3R

Description

@VL4DST3R

Possbly related to this, I am getting:

SponsorBlock/DeArrow: Extension storage is full. Please delete some unsubmitted segments in the options.

Error: An unexpected error occurred

when I try to start a segment on a Youtube video (no actual unsubmitted segments present).

Checking the console after I do this, I am also getting

TypeError: can't access property "startsWith", r is undefined[content.js:2:308828](moz-extension://0da43a68-7b38-4825-841f-6e912be519fe/js/content.js)
(the extension UUID matches SponsorBlock)

Activity

ajayyy

ajayyy commented on May 8, 2026

@ajayyy
Owner

Firefox?

VL4DST3R

VL4DST3R commented on May 8, 2026

@VL4DST3R
Author

Yep, specifically Waterfox 6.6.12 based on Firefox ESR 140, but it worked fine before plenty of times.

itsamino

itsamino commented on May 14, 2026

@itsamino

I also get this with no unsubmitted segments present. It did suddenly work again for a day, and then went back to this error. Latest firefox

EDIT: If I just press ok to the error, I can actually submit the segment (after like 8 OKs).

helpimnotdrowning

helpimnotdrowning commented on May 19, 2026

@helpimnotdrowning

I've also been running into this for a few months now, and I finally close to fix it about a week ago with these steps:

  1. export all your Options and Data (click "Save to file" on both; no need to do it for the userID, its saved in the Options export)
  2. uninstall Sponsorblock
  3. close the browser (sometimes it will keep the broken settings if you reinstall in the same session)
  4. reinstall Sponsorblock
  5. re-import your Options and Data ("Load from file")

I've had no issues since then!

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