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XF 1.3 XenForo Callback (Invalid Class) issue.

Discussion in 'Troubleshooting and Problems' started by Forum, Sep 6, 2015.

  1. Forum

    Forum Member

    Hi guys,

    I have problem with my XF, everytime I want to install an add-on, I got these 'Invalid Class' issues:

    When installing Tapatalk:
    When installing another add-on:
    Any idea what's wrong with my XenForo?

    I did Tools -> File Health Checks: All 1.125 checked files are present and correct. :)

    Any solution would be appreciated.

    Thank you.
  2. Mike

    Mike XenForo Developer Staff Member

    This would indicate the files haven't been uploaded to the correct places (or properly). You should contact the relevant authors/post in their add-on threads so they can give specific comments on how their add-on is packaged.

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