Failed to execute tools\android.bat: solution
In my case the Tools directory just disappear.
..\sdk\tools
To solve it:
1) Just go to SDK zip -> adt-bundle-windows-x86_64-20131030.zip
2) Unzip the Tools Directory only.
3) copy it under ../sdk/
I had a similar problem today. Press the Windows button and Search for android.bat(in the search programs and files text field)
Then copy the file to your android SDK folder (C:\Users\Shan\Documents\Computer Science - YEAR 2\Android App Development\adt-bundle-windows-x86-20130917\sdk\tools\
).
After that don't run SDK manager but run the android.bat
file.
Hope this helps
-Zaniar
I had to move the AVD manager from /sdk/tools/lib
to the root folder /sdk