Patch (27) released December 8th, 2004. Release notes can be read here.
In the patch 1, in order to set the Mektoub packers gameplay as intended, your Meks were taken out of their stable and spawned next to you in the closest capital city to you. It didn't prove to be much of an issue (with the odd exception) as players could access the inventories from any stable around Atys. In patch 26, Mektoub packers were changed so that the inventory was now only accessible from the stable they are housed in. This caused someproblems to certain players who had their Mektoubs far, far away.
We have decided to let all player use a command just *ONCE* per Mektoub packer. This command allows you to summon each of your Mektoub packers just *ONCE* to your location. We recommend you use this command when near a stable so you can safely put your Mek inside.
In order to summon your Mektoubs, you need to type the following command: /a summonPet #petNumber (ex: 1 for packer1)... so as an example "/a summonPet 1"