[AnOnlineGuy]

My Kodi has been working perfectly fine for 4 months and now no longer opens at all. The app just says 'Application not responding' 

You can see a window is open when I activate hotkeys but nothing is there. I realise probably deleting Kodi and installing it again will probably fix the issue but I would lose my custom build.

I have OpenWizard on the build but I had never backed it up which is dumb I know! Is there any way to back it up or am I gonna have to uninstall Kodi and start again?

Any help would be appreciated!

[AnOnlineGuy]

I also have a log from my mac when I force quit it but is hella long

[Klojum]

Kodi setups that have add-ons like "wizards", "builds" or other banned items will not get support on this forum as per our forum rules (wiki).

You can try uploading the first couple of 'pages' of your log file to a pastebin website, so can have some sense of your setup. But as already explained, there are no promises for support.