Originally Posted by gregor171

this was really a quick look into code:
$result=$DBData->query...
$DBData is not an object is what the error says.
It should be something like (check the rest of the code):
$result = $this->DBData->query...
but you need a variable:
protected $DBData;
somewhere...
this variable should be an instance of $myObj...

I also noticed confusion: dbopen.php or opendb.php