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The problem

  • The add-on downloaded from this site could not be installed because it appears to be corrupt*?

(sad) please fix this bug? or problem please?

*The add-on downloaded from this site could not be installed because it appears to be corrupt*? (sad) please fix this bug? or problem please?
Attached screenshots

All Replies (1)

Hi, this is caused by old versions of Firefox not having an updated certificate. Can you update? Your Firefox said it's on Windows 10, so it should work. Options are: