Today (Mar, 15, 2016) chrome stopped working with the --disable-web-security flag. I have tried the following options described in various posts:
1) Kill all instances of Ch
Do not disable web security. You're opening your accounts to attacks and your local files to being stolen.
Instead use a simple web server. It will take you all of 2 minutes to install and use. Here's one with a gui, and here's several more that run from the command-line