discuss.answer
I was able to fix my issue. I checked the web server php error logs and saw two errors for \manager\includes\document.parser.class.inc.php. Checking the file, I saw that a large portion of it was missing (file size was only 22Kb instead of 153Kb). When I tried to use my FTP client to overwrite this file, it would appear to upload but the file size would not change. I deleted the bad file, then uploaded the good one and everything started to work again.
Did you upload with FTP? maybe not all files where uploaded?
You could try to update with this file:
https://github.com/evolution-cms/installer
Place into you root ansd start installing 1.0.15
Evolution user, I like the back-end speed and simplicity
