XML-RPC Error (404): Unknown error

Hello,
I've got this problem since yesterday. That worked fine and i've made this :
- create a menu 'Joomdle ABC' : no problem
- i changed this to 'Joomdle courses by categories' : no problem, and work fine today...
- i came back on 'Joomdle ABC' on this menu :
"XML-RPC Error (95042507): Erreur de lecture de la base de données | DEBUG INFO: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%') OR (fullname like 'e%') OR (fullname like 's%') OR (fullname like 'p%') O' at line 21 SELECT co.id AS remoteid, ca.id AS cat_id, co.sortorder, co.fullname, co.shortname, co.idnumber, co.summary, co.startdate, co.timecreated as created, co.timemodified as modified, ca.name AS cat_name, ca.description AS cat_description FROM mdl_course_categories ca JOIN mdl_course co ON ca.id = co.category WHERE co.visible = '1' AND ( (fullname like 'B%') OR (fullname like 'i%') OR (fullname like 'e%') OR (fullname like 'n%') OR (fullname like 'v%') OR (fullname like 'e%') OR (fullname like 'n%') OR (fullname like 'u%') OR (fullname like 'e%') OR (fullname like ' %') OR (fullname like 'd%') OR (fullname like 'a%') OR (fullname like 'n%') OR (fullname like 's%') OR (fullname like ' %') OR (fullname like 'l%') OR (fullname like ''%') OR (fullname like 'e%') OR (fullname like 's%') OR (fullname like 'p%') OR (fullname like 'a%') OR (fullname like 'c%') OR (fullname like 'e%') OR (fullname like ' %') OR (fullname like 'c%') OR (fullname like 'o%') OR (fullname like 'u%') OR (fullname like 'r%') OR (fullname like 's%') OR (fullname like ' %') OR (fullname like 'e%') OR (fullname like 'n%') OR (fullname like ' %') OR (fullname like 'l%') OR (fullname like 'i%') OR (fullname like 'g%') OR (fullname like 'n%') OR (fullname like 'e%') OR (fullname like ' %') OR (fullname like '!%') OR (fullname like ' %') OR (fullname like ' %') OR (fullname like 'B%') OR (fullname like 'o%') OR (fullname like 'n%') OR (fullname like ' %') OR (fullname like 't%') OR (fullname like 'r%') OR (fullname like 'a%') OR (fullname like 'v%') OR (fullname like 'a%') OR (fullname like 'i%') OR (fullname like 'l%') OR (fullname like '.%') OR (fullname like '.%') OR (fullname like '.%')) ORDER BY fullname [array ( )] | ERRORCODE: dmlreadexception"

All the other components works fine !!! Just this one ??

My config :
Joomla 3.0.3
Moodle 2.4.3
Joomdle 0.91
Hikashop 2.1.1 (tried 2.1.2 but doesn't work properly)

Thanks so much for your help !

I moved your question to a new thread, as it's a different problem.

Try creating the menu item ABC again from scratch, as you said it worked on the first try.