I hadn't updated my DK tools in Eclipse for quite some time, so I decided to do so today. Everything updated and installed just fine except for both SDK Tools and Platform-Tools for API 19 (Kit-Kat). I got a message saying that the platform-tools directory is being accessed and can't be renamed by the updater. I've been troubleshooting for a while, temporarily disabling applications on my computer, but to no avail. If you have any suggestions as to what could be accessing this folder (besides eclipse...), please post them here. I'm sure there are others that have the same issue.
The exact warning message reads:
Failed to rename directory C:\Users\blah\AppData\Local\Android\android-sdk\platform-tools to C:\Users\blah\AppData\Local\Android\android-sdk\temp\PlatformToolPackage.old01.