Chosen Solution
A couple of days ago, while reading my mails, the app closed. And since then it keeps quitting unexpectedly frequently. Sometimes works for up to an hour sometimes it crashes in seconds. Tried PRAM reset, starting the app form applications, started with shift pressed, did a clone the OS and started from there, but the issue remains. Also the mails inside are organised in folders and i can’t lose that. Is there any ideas? What can i do to fix this issue without losing my folder organisation? Will i have any luck if i migrate to Mojave?
I’d run a good “Paid For” anti-virus program like Symantec Endpoint protection or WebRoot. Viruses on Macs are now rampant.
You’ll need to boot up under an external drive and then run Disk Utility to see if you can fix the corruption. Otherwise you’ll want to create a TimeMachine backup, then reformat the drive and re-install your user accounts, I would download fresh copies of your apps from the Apps Store and any directly from the publisher of the app. Then restore your TimeMachine backup of your data. On the most part your folder and file positions will stay the same at the OS level.
