Cannot read webpage format

[chuck]

i tend to agree with seethrou ... it's a server config issue.
you might try renaming or deleting the /zc_install/.htaccess file
or better yet, check the server's errorlog to determine what the actual error was ....

[BatVink]

Searching by Google for HTTP 406, it will show 29,800,000 items

I see that as a hindrance, not a help

I have bypassed the problem by commenting out a security check in the Apache configuration files, running the install, and then putting the check back in again.

The error trap was in an additional security file supplied with the WAMP installation. It is a file that prevents the known hacks from getting through, and so it looks like the install routine may be using functionality that could be conceived as a hack!

[seethrou]

I see that as a hindrance, not a help

Searching by Google for HTTP 406, it will show 29,800,000 items

The numbers already told that, there are hindrances in before. And most not directly related or caused by the applications.