Same problem ...
Can't access ADM !!! Please help !
Ok ... now my whole site is down !!!!!!!!!!
Run this SQL command: UPDATE phpbb_ext SET ext_active = 0 WHERE ext_name = 'Credits page'
If that's not working, go to the phpbb_ext table, and search david63/creditspage
Open that and set the value from 1 to 0
Then via FTP, delete the production folder in /cache
OK problem fixed. Re-download (fixed files) and you can overwrite the existing ones, purge cache and it should be working.
Problem was with stupid Windows not honouring syntax correctly
David Remember: You only know what you know and - you don't know what you don't know! My CDB Contributions | How to install an extension I will not be accepting translations for any of my extensions in Github - please post any translations in the appropriate topic. No support requests via PM or email as they will be ignored