I'm exporting some spaces and have one that comes to just under 8GB as an html zip archive. Both Windows and 7-zip report having problems accessing the file: Windows says it's invalid while 7-zip says many of the files use an invalid compression scheme. Is Confluence (4.3.2) able to export large spaces? I notice the 'zip' binary isn't running so I guess it's using ZipOutputStream or similar from Java. In that case, would Confluence be the limiting factor, or would I need to investigate upgrading the JRE?