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 147 Articles
Welcome! My Name is Tommy White and I do what it takes to get it done. I offer my services to anyone in need. I specialized in Graphic Design Management, Web Development, Promotion, and IT Services.


  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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