Hi
I tried on my copy but did not get any unzip error.
Can you give exact error detail and may be error.log file to analyse. it is in /BIn directory.
May be your version of unzip32 is corrupted somehow so replace it by downloading from
http://sourceforge.net/projects/infozip/files/UnZip 6.x (latest)/UnZip 6.0/unzip60.zip/download
latest version is version 6.
Copy extracted unzip32.dll to /windows/system32/ directory and
register it using command "regsvr32.exe unzip32.dll" (without quotes ) in run dialog box of start button.(refer to first post in the thred)
Only bse eod and pr.zip download is using unzip module so nse should function.
If above doesn't work, let me know.
pk