It says on the first post that the mod is tested on 3.0.6. I unfortunately can‘t find a 3.0.6 version with german language pack for updating. I run an old phpbb 3.0.2 with this mod (1.0.4 version).
I only can find phpbb updaters to 3.0.7. Will I run in trouble with the 1.0.7 version of this mod on 3.0.7?
Works fine on 3.0.7. So if you are planning to upgrade to 3.0.7 using new clean files just do that and then install version 1.0.7 of this mod once you are done.
But if you are planning to use the phpbb3 updater so you can retain your other mods, this is a bit tricky since phpbb3.0.6 was pretty different from 3.0.5 in ways relevant to this mod. If you want to do that, you should do the following in the order listed below:
1. Update this mod from version 1.0.4 to version 1.0.5c (the contrib/upgrade_scripts folder in the download for this mod includes upgrade scripts showing how to upgrade rom each version to the next).
2. update phpbb3 to the most recent version (3.0.7-PL1), but pay attention to the note in (3) below.
3. Update this mod to version 1.0.6 (again, the contrib/upgrade_scripts folder includes upgrade instructions). But note here that the upgrade script assumes you have selected 'Merge modifications' for all files the phpbb updater reports as 'Modified files' and have selected 'Merge modifications (Loose modified code within conflicting blocks)' for all files the phpbb updater reports as 'Conflict files'. If you choose other options when you update phpbb, you will have to figure out whether you will need to make a corresponding change in this script.
4. Update this mod to version 1.0.7 (again, the contrib/upgrade_scripts folder includes upgrade instructions).
That should do it. Good luck.