E:footer is wrong when sideloading zip on X1032 Cyanogenmod

I stupidly deleted google download manager, and I've converted a apk of Download manager for Android to a flashable zip as a replacement. I put it in sdk platform-tools and opened a command prompt in the directory. I use

Code:

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adb sideload blah.zip

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and get this in the terminal:

Code:

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Total xfer: 0.06x

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This on the phone (and a android on it's back):

Code:

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Install failed

(blah blah)

E:footer is wrong
E:signature verification failed

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Thank you for your help.