生成推送证书时候导入签名错误：We are unable to upload this Certificate file because it is invalid. Please check the file and try again
解决办法：导出签名时候名字不能留空
参考 http://stackoverflow.com/questions/16852972/we-are-unable-to-upload-this-certificate-file-because-it-is-invalid-please-chec
I just had this problem. I'd left the Common Name: field blank. I filled it in and the error went away.