What is 'tuple' object has no attribute 'is_prerelease' while installing zc.buildout=1.7.1

Plone Support Add-on Development
2

you are using zc.buildout==2.5 and you require zc.buildout==1.7.1.

you probably bootstrapped your installation with an old version of the bootstrap.py script; update the script using something like:

wget http://downloads.buildout.org/2/bootstrap.py -O bootstrap.py

and/or use:

python bootstrap.py --buildout-version=1.7.1

using Python from your virtualenv.

run buildout again.