There is a small typo around line 115 of backend/Plugins/transfer.php, where a line that says:
$SQL = 'INSERT INTO `myinfo`.`temp_data` (
should actually say
$SQL = 'INSERT INTO `temp_data` (
You can either change this typo manually by hand, or download the patch from my patches folder my MyBanco.
|mybanco-0.05-bad-query.patch.md5||15-Oct-2008 07:52||md5 checksum|
Note, MyBanco was a project from a number of years ago. It is no longer developed, and the code is not really that great. If you would still like to download, install and generally have a play with it, check out the project on GitHub (github.com/mybanco/mybanco).