Thank you for your pointing out the packaging error.
I have add zlib1.dll when I have updated binaries.
--- On Tue, 2011/11/15, Kirill Kryukov wrote:
> Dear Dr. Matsuoka,
> "zlib1.dll" is missing in your latest gnuplot 4.5 binaries.
> (From http://www.tatsuromatsuoka.com/gnuplot/Eng/winbin/ :
> 0001 gp45-winbin.zip, 10,499,767 bytes, 2011-11-15, md5sum
> 0002 gp45-winbin-small.zip, 6,512,202 bytes, 2011-11-15, md5sum
> Thanks a lot for preparing a Windows binary.