high sierra osinstall.mpkg damaged or missing on fresh install

i am trying to do a fresh install of high sierra on my hackintosh. it gets through the initial copy, but when it reboots and goes to continue the install i get the error OSInstall.mpkg is damaged or missing. not sure how o get around this.

system specs:

i7-4770k asus z87-pro motherboard 32 gb ram 1tb sad nvidia gtx 970

latest clover system definition imac 14,1

submitted by /u/rsd99
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