spells unselectable
 

I have spells added, bought 1 in each catagory however when fighting in monster arena

Use your Lightning Staff
Use your fists.
Use your Elixir
You do not have a spell.
Retreat

My spell's icons show up though in: Inventory

Are you sure you set the Battle Type properly?
If I could see a SQL dump of the item_categories table (or whatever its called on 3.0.x) I can see if its an SQL mistake or otherwise.

--
-- Dumping data for table `rpg_items_cats`
--

INSERT INTO `rpg_items_cats` VALUES (1, 'Weapons', 'Vast selection of weapons to choose from', 1, 3, 2350, 1, 0);
INSERT INTO `rpg_items_cats` VALUES (2, 'Armor', 'An entire Armor collection at your service', 2, 4, 930, 4, 0);
INSERT INTO `rpg_items_cats` VALUES (3, 'Items', 'Diverse Items', 3, 1, 1500, 5, 0);
INSERT INTO `rpg_items_cats` VALUES (4, 'Attack Spells', 'Offensive Spells', 4, 2, 2280, 8, 0);
INSERT INTO `rpg_items_cats` VALUES (5, 'Defensive Spells', 'Defense spells', 5, 0, 0, 9, 0);
INSERT INTO `rpg_items_cats` VALUES (6, 'Combo Spells', 'Combinations of attack and defense spells', 6, 1, 50, 7, 0);