Alright, so I started using chrome today, and I added the command line to my shortcut which launches chrome, to specify that I want that purge memory button in the task manager built in chrome. I tried using it immediately, and it crashed chrome no matter what I did. It appears to be that they have a segmentation fault throwing this runtime exception, and I am using the latest release version of chrome. A "dummy" fix I found which allows the button to work as intended, is to add another command line option tupled with the --purge-memory-button command line argument.
"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --purge-memory-button --winhttp-proxy-resolver
And now you should be able to use the purge memory button normally without chrome crashing. Just a semi-fix, before they fix this at the source for the latest build of chrome.