Install Multi Prefix after uninstalling the legacy stub (or uninstalling a very old version on XF1)

[Xon]

1. Create a database backup
   1. A minimum backup can be created by backing up the xf_thread table with the following SQL;
      

      create table xf_thread_backup like xf_thread;
      insert into xf_thread_backup select * from xf_thread;

2. Remove any old Multi Prefix 2.x.y files from src/addons/SV/MultiPrefix
3. Install the MultiPrefix-1.6.0-stub add-on, attached to this post.
4. Update files to Multi Prefix 2.2.4(or later)
5. Upgrade to Multi Prefix 2.2.4 (or later)
6. If you encounter issues open 1 (one) ticket. Please ensure you have a database backup on hand.