[imp] Zip download not working for me

[P.V.Anthony]

Hi,

When I click on the "download attachments as zip", the file does 
download but I am not able to unzip it.

What am I doing wrong?

Please let me know if I have to add any special flags when compiling 
php. Or if I have to install any pear extensions to make the zip 
download work.

Please do advise.

I am currently using the following.

Fedora Core 1
php 4.3.11
Horde 3.1.1
Imp 4.1.2

P.V.Anthony