Yes, this could be the cause. First make sure that you are using the latest version of the plugin, released together with Akeeba Backup 3.1 Stable. Disable the plugin, remove all akeeba*.php files from the temp directory, clean up the Pending entries from the "Administer Backup Files" page and then re-enable the plugin. This should fix that.
Nicholas K. Dionysopoulos
Lead Developer and Director
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