problem with android map key

Every time I try to use the key开发者_StackOverflow中文版tool to get a key for my maps API, it pops up saying "Keytool is not a valid Win32 application"

I am running it through command line and am using the same command that is on the android tutorials

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I came across this problem as well. I looked at the size of the keytool.exe file, and found it was 0kb. I ended up running the JDK install file again to fix the problem.