I have the same problem (some little difference only), I don't think I need to create a new Topic...
My NAS where the old forum (phpBB 3.0.14) was has crashed.
While repairing, I put all files on my dev computer on Windows Seven, using wampserver and make a very hard upgrade to phpBB 3.2.2, removing lot of MODs and repairing severals GUI Bugs...
After that, I install several extensions to make the new upgraded forum work like old one.
For the moment, all is OK.
But, now I need to delete all old files from the NAS (DS1815+) an replace code (and database) with the new migrated forum.
But I'm under windows, if I copy files and folders, all will have same Chmod permission.
If I manually put all permissions like this Knowledge Base - phpBB3 Chmod Permissions
, my new forum will work properly ?
Another idea is to crash database and file, make new installation. after that, all files should be OK and chmod too, so just overwrite some folders (images/, files/, store/, styles/, ext/) and replace database with migrated one. It should be work ? Better or not ?
Thanks for your reply.