I slowly begin to understand. Here's what I understand: you have a live site. You took a backup and you want to restore it locally. Your local server is IIS Express, managed by Microsoft WebMatrix 2.0.
Using Kickstart is not mandatory, but it's possible. However, you must not
use the FTP mode. Since it's a local installation there is no FTP server to begin with. You have to use the direct file writes.
Now, regarding the "invalid header" error message. This means that you have a corrupt or truncated archive, or you're missing backup parts. Please download all backup archive parts using FTP in Binary transfer mode. For a tutorial please consult our Videos
(it's the third video tutorial in the Akeeba Backup series). Using the Binary transfer mode is crucial
to the extraction. Remember that if you have a multi-part archive file you will need to download all archive parts, i.e. .jpa, .j01, .j02 and so on. How will you know? If there are files with the same name and these extensions then it's a multi-part archive. After the download also please check that the size of each file matches down to the last byte. If they don't you have a corrupt or truncated archive and you won't be able to extract it.
If Kickstart keeps on failing you can extract the backup archives with Akeeba eXtract Wizard. That's a free download from our site. After extracting the archive you can access the restoration script as http://192.168.10.68/installation/index.php (in this case you must not
try to run Kickstart; Kickstart's sole purpose in life is to extract the backup archive, not restore the backup, and you have already extracted the backup archive). In this case, after the restoration is over, just remove the installation directory.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
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