[El_Muerte]

yes I think it does. It calls register in the Datastore class without a 3rd argument, so the auto detect will be used.

Why don't you simply address the datastore through the api:

// get data, only needed once
$vbulletin->datastore->fetch(array("mykey"));
// read data from:
$vbulletin->mykey;

// store data:
build_datastore("mykey", $mydata, 2);  // 2 means automatically detect for unserialization