TWRP - Error 7 while updating AICP

Hey guys,

I flashed AICP on my Asus Zenfone 2 a few weeks ago and it worked great, till a few days ago when I tried to update it via automatic update, like I usually did, and it didn't update. I tried to update it manually and got an error (MD5 file not found).
I checked the "Skip MD5 verification during backup" box on settings and now I'm getting "ERROR: 7 Error installing zip file."
I made sure the ZIP file wasn't damaged.
I have the latest version of TWRP available.
Is there any way to fix it?

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