The extension providing ZipArchive is not available

[scohen125]

I just disabled all of my plugins and ran the cpg installer and got the following message:

The extension providing ZipArchive is not available

I'm not sure how to proceed.
Thanks,
Steven Cohen

My website is www.retinagallery.com

[ron4mac]

The installer relies on the ZipArchive extension class to perform the install. If it's not (or can't be made) available on your server, you'll have to do a manual install (see Documentation menu item above).

[scohen125]

Thank you for your response.  I did not see a link for documentation for 1.6 install just 1.5.  It might be a problem that I tried the install once on my server and it didn't work (I think because I hadn't disabled all the plugins).  So then I rolled back my site and now and trying to upgrade again.  With 1.6 can I do a manual install without losing my images by keeping my album folder and deleting everything else and uploading all the files for 1.6 to my server?
I appreciate the help.  My site is running slow and I'm hoping the upgrade to 1.6 will help with that.
All the best,
Steve

[ron4mac]

Just follow the directions: http://documentation.coppermine-gallery.net/en/upgrading.htm#upgrade_any

True 1.6 documentation is lagging.