Any rom I download, installs works like a charm. cwm 18.104.22.168 on a lg spectrum If I unzip and zip the same rom. I get "installation aborted" with no error codes. Used 7zip with "store" compression. I have tried a few different programs. Tried this on the phone, on 2 pc's and in a linux environment. I have no idea what I am missing...every rom guide says the same things....I must be missing a step. Do i need to do builds from source and need to set up a building environment? Help would be much appreciative!