When I added the "buffered transfers" option, I originally changed everything to use it. Then I decided that it was kinda pointless having unbuffered reads, so changed some of it back..
Anyway, I noticed that ISOs are opened in read/write mode because of copy n paste again.. Is it possible that some of the ISOs are read only, or the permissions are read only for some of them?
Things like ISO,CISO, WBFS Files should always be opened as read only, except when they're getting created/written. I need to fix that, even if that isn't the problem here.
Edit: I double checked.. Read only ISO files will cause the error you have. The changes I've made will fix it.
Edit2:
@sp00ky
There's 2 or 3 features I still want to re-implement before the covers. It keeps getting put on the back burner because there's loads of little things to do.
Some features I still want.
1. Inline editing for the Titles, ID etc.
2. Save game lists to file using the templates.
3. Translations. I decided it's probably better to do this before the covers/info stuff too. It'll be a massive job otherwise. Better to do half the work twice..