Visual SPL is not working on Chrome 48 beta 64 bit. The parse diagram is not updating. The results table is not updating.
Hold ctrl and press f5 on your keyboard. (If you have keyboard with f lock, you need to press f lock before you can press f5)
If that doesn't work, stop using a beta version of the browser.
I am having this problem with the latest non-beta version of Chrome on my Mac. No amount of hard refresh or cache clearing seems to fix it. I'm on latest Splunk Enterprise 6.4.2 on Linux.