OK, I've managed to get a broken Perch installation working again by re-uploading and overwriting the perch core folder with v2.8.34
I can log in and I can upload assets to the resources folder.
I have tried to edit a post, but every time I click 'save', I get a 403 Forbidden error.
I can't see what is causing this. Is there something missing or what do I need to make permissions changes to?
Thanks in advance for any help.