CWM: Almost any rom I try to install returns "(Status 0)" [HTC One GSM] CWM version: 6.0.4.3 touch

I tried to update my CM 10.2 to 11, but I always run into this error when installing a zip from SD card:

E:Error in /data/media/0/[filename].zip
(Status 0)
Installation aborted.


This happens for every rom I try to install, except a Kitkat AOSP rom I tried.

Even the 10.2 Rom I still had around on the card threw an error, but a different one.

I can't remember what exactly, but it looked like it couldn't match my phone's type (m7) to m7  or m7ul

I think my phone somehow forgot that it is an m7

Anyone got an idea how I can install roms again?
The problem was, that I had the m7att version of CWM installed. Must have misclicked when downloading.

Updated CWM to the generic m7 version and rom flashing works again.