I found what causes the problem.
On your WAMP server, if "display errors" is set to ON in PHP Settings, then indicated notice messages are not well HTML outputed and they cause the script to fail !?
Setting "display error" to OFF avoid having the problem...
FYI, here is firebug report :
[Break on this error] <b>Notice</b>: Undefined index: id in C:\wamp\www\DrasticTools\drasticSrcMySQL.class.php</b> on line <b>126</b><br />\n
invalid flag after regular expression
localhost/DrasticTools/js/mootools- ...
Line 255
Hope this could help other...
Thierry