Thanks, here is the verbose mode output: Code: + mkdir -p /Users/Username/.winetrickscache/. + test '!' -f /Users/Username/.winetrickscache/./WindowsXP-KB975337-x86-ENU.exe + '[' b9a84bc3de92863bba1f5eb1d598446567fbc646x '!=' x ']' + verify_sha1sum b9a84bc3de92863bba1f5eb1d598446567fbc646 /Users/Username/.winetrickscache/./WindowsXP-KB975337-x86-ENU.exe + wantsum=b9a84bc3de92863bba1f5eb1d598446567fbc646 + file=/Users/Username/.winetrickscache/./WindowsXP-KB975337-x86-ENU.exe ++ openssl dgst -sha1 ++ sed 's/ .*//' + gotsum='(stdin)=' + '[' '(stdin)=x' '!=' b9a84bc3de92863bba1f5eb1d598446567fbc646x ']' + die 'sha1sum mismatch! Rename /Users/Username/.winetrickscache/./WindowsXP-KB975337-x86-ENU.exe and try again.' [/code]