Hint: use ‘@foo’ to launch a virtual device named ‘foo’.

OK I am posting this because I spent all ******* day trying to fix a bug that’s been around for roughly 3 ******* YEARS.

invalid command-line parameter: Files.
Hint: use '@foo' to launch a virtual device named 'foo'.
please use -help for more information

If you’re trying to use eclipse to build an application, like me, then you have probably ran in to the above error when using Windows 7 64bit with 64bit Java.

I have tried a LOT of different solutions but none worked. So while reading about creating a symbolic link in windows I came up with an idea. COPY THE ANDROID FOLDER LOCATED IN YOUR Program Files (x86) FOLDER TO C:\ANDROID. Once it’s finished change the link in Eclipse (window / preferences) to the new location.

All I know is it’s working fine for me now and I HOPE this helps someone else out!

About Tommy White 166 Articles
Tommy White is a Graphic Designer, Web Designer / Developer, IT Director and more, including Foodie Fanatic. "I enjoy helping others in times of need and live steadfast to the motto of paying it forward".


  1. hi,i am using eclipse ide for developing rhomobile applications.I had installed android sdk,ndk and executed an application.but i am able to exceute the application but the emulator size is occupting the entire desktop.could you tel me any solution to reduce the size of emulator.i tried a lot to reduce the size.but i didn`t find a proper solution.could you share me a proper solution to reduce the size.

    • Have you tried:
      1. Run > Run Configurations
      2. Pick the “Target” tab
      3. Scroll down to Additional Emulator Command Line Options and put in: “-scale 0.8” or another number .

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