WP Clone by WP Academy, Restore button not appearing

Hello,

after going through http://wordpress.org/support/topic/error-message-the-provided-url-is-either-not-valid-or-empty?replies=56 I couldnt find any solution yet.

I am trying to run a wordpress powered blog in Google App Engine. so far i have a plain fresh copy of WordPress up and running. I just need to migrate my current blog to this new created blog.

When i use WP clone in my current host or my local development area, everything seems to be fine. but when installing it in the new host (google), the restore button doesnt appear for restoring purpose. also the radio button doesnt switch as also explained in the link provided. here is a screenshot http://oi58.tinypic.com/fjlsop.jpg

I am using version 3.5.1 which is the compatible version with google
Could you guys please explain and provide a solution ? this is driving me mad . . .

Thanks guys