Occasionally my main character reverts to automatically walking in one direction upon start. There isn't any script that would be activating this action. Not sure what's up. Any suggestions?

1) Unplug any joysticks you may have
2) Make sure the key's aren't sticking (directional or numeral pad)
3) Make sure you don't have 2 keyboards in which one happens to be lying face down and pressing the up button
4) Try rebooting
5) Try a new project

You wouldn't believe how many times I've seen topics with the same issue.

Try to Restart your Keyboard

Making a new project always works for me. It is weird, but it has happened a lot of times 0.o