Description of my issue:
I am getting the Ajax 500 Error at approxiamtely 74% into the backup. I have gone through all of your checklist step by step as well as read many forum posts since so many have this issue, but nothing has resolved it.
To complicate matters, the Alice tool will not run at all (won't even initialize after I press start) and there is absolutely no log files being generated. I click on the logs in the backend to view and I download them and they are completely empty. If I click on "Manage Backups" it gives me an error "Error displaying the error page: Application Instantiation Error: Error initialising the session."
This error began right after my developer and I implemented JCH Optimizer and DotCache to boost the site. Not sure if that is related since we installed those same extensions on my other site and Akeeba is working flawlessly.
I don't know what to do if I can't send you a log with information in it ... sorry to be a pain in the butt!
Can you make this a private ticket? I can't change my username and don't want search engines to link my site with this post.