Unable to install Gapps, package corrupt
I've recently bought a ZTE open C. Not convinced by Firefox in its actual state, I've decided to install Android back.
So now I have an Android 4.4.2 fully working. But I would like to get access to the google play store. This seems to mean that I must install the gapps.
So I've downloaded the latest gapps on the cyanomegmod site and tried to install it several times. But each time i get the same "signature verification failed, package corrupt".
Here's my question, is there anyway to override this verification (because I've checked the md5 of the file several times) or to install the google play store in another way ?
Thank you in advance for your help, and please forgive my bad english.