Joodatabase won't work

I installed the Joodatabase component and search plugin and nothing is working. Not even My little DB
Used System: Joomla 1.5.15, wamp apache server local installed, MySQL and php 5.3.0. OS:Windows XP
After installilng and using a menu item the results are as follows:
The header of the database is visible. But above the header errors/warnings. It seems the database table is not found or no records found.
In Catalog view with Select Where expression: select * from jos_joodb_sample WHERE myid is not null
Result frontend:
Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in C:\wamp\www\joomla\libraries\joomla\database\database\mysql.php on line 344

Without a selection is the result:
Notice: Undefined variable: loopclass in C:\wamp\www\joomla\components\com_joodb\views\catalog\tmpl\default.php on line 28
Deprecated: Function split() is deprecated in C:\wamp\www\joomla\components\com_joodb\helpers\joodb.php on line 96

In the single database entry is the result:
Notice: Undefined property: JoodbViewArticle::$param in C:\wamp\www\joomla\components\com_joodb\views\article\tmpl\default.php on line 5
Deprecated: Function split() is deprecated in C:\wamp\www\joomla\components\com_joodb\helpers\joodb.php on line 96
Also the change of myid in id didn't help.
As a starter in webbuilding with Joomla I couldn't make anything out of it what is wrong.
At least the sample database schould work directly.
Can anybode help me?
Thandks in advance, Jan