Im getting a "go do the install process" message, then clickin on the tiki-install gives me a totally blank page with blank content.
Things I would look at checking:
When you FTPd over to the host, make sure it doesnt convert the file formats, I've heard of some people with problems because of that
Check the hosts PHP Memory Limit is about 12Mb, it may run under 8Mb, but its 50/50
Check your permissions on the necessary folders. Is it running in Safe Mode as well? InstallTikiUnderSafeMode ?