TYPO3 Core

I selected a record in ws module and after "canceling" the publish to live action i got this error:

SendToSpecificStageWindow

Caller     t3lib_DB::exec_SELECTquery
ERROR     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 ') AND be_users.deleted=0 ORDER BY username' at line 1
lastBuiltQuery     SELECT username, uid, email, realName FROM be_users WHERE pid=0 AND uid IN () AND be_users.deleted=0 ORDER BY username
debug_backtrace     t3lib_div::callUserFunction#73 // call_user_func_array#5174 // t3lib_extjs_ExtDirectRouter->route# // t3lib_extjs_ExtDirectRouter->processRpc#86 // call_user_func_array#141 // tx_Workspaces_ExtDirect_ActionHandler->sendToSpecificStageWindow# // tx_Workspaces_ExtDirect_ActionHandler->getSentToStageWindow#226 // tx_Workspaces_ExtDirect_ActionHandler->getReceipientsOfStage#431 // Tx_Workspaces_Service_Stages->getResponsibleBeUser#462 // t3lib_BEfunc::getUserNames#411 // t3lib_DB->exec_SELECTquery#1590 // t3lib_DB->debug#259