cannot.find.zip.align=The zipalign tool was not found in the SDK. Please update to the latest SDK and re-export your application or run zipalign manually. Aligning
On a Mac, I did the following:
Find it on o/s (I had already downloaded build tools for 19 and 20)
Press Ctrl-Open to allow apps from the internet
Move it from sdk/build-tools/android-4.4W folder to sdk/tools/. Whew.