Taken from the svn item_db file just now:
ID,AegisName,Name,Type,Buy,Sell,Weight,ATK,DEF,Range,Slots,Job,Upper,Gender,Loc,wLV,eLV,Refineable,View,{ Script },{ OnEquip_Script },{ OnUnequip_Script }
2440,Sprint_Shoes,Sprint Shoes,5,20,,300,,2,,0,0x00CFDF80,2,2,64,,0,1,0,{ bonus bAGI,1; bonus bSPrecovRate,5; if (isequipped(2387)) { bonus bMaxHPRate,7; bonus bMaxSPRate,7; bonus bCastRate,-3; bonus bDelayRate,-15; }; },{},{}
^ means there is no slot for the item, on server side. Only the client txt files show you a slot.
I am not sure which case is it, could be eA error or the client file error (is it in the translation ? ...).
A db update to rms should follow soon, it should have been done this month but moving server caught in the middle (the easter down time changed my mind on moving later).