course restore failed from 1.9.12 to 2.4.1+

i am a complete newbie in Moodle and i have being tasked with upgrading my school moodle from 1.9.12 to 2.4.1+ and hence i am playing around with Moodle now.

i have managed to setup a Windows Server 2008 machine running IIS 7.5, PHP 5.4, MySQL and Moodle 2.4.1+ for my testing purposes.

All were going well until i tried to restore a single course in 2.4.1+ using a backup from 1.9.12, my moodle keep giving me the error below :

error/failed_move_converted_into_place

Any help from the gurus in here will be greatly appreciated and how do i dig deeper like seeing the debugging logs for this error above ?