What's the error on your The story is like this, I want to back up files with alll in one plugin move, but there is a big problem like the following error: can't create pls contact sermask..... , and I should change the permissions in filemanager right ? So I can use it, right? And later, when I delete the old code on my host, when I upload the new code, will it have any effect? This is the error I encountered and one thing I want to make sure of. The other half is when I delete the old code, does it have any effect on the transfer operation? Or after deleting the old code, everything will return to default?