Extra_english.lang file aint working

[RawkBandMan]

At <Entry name="room_prison">To the Prison</entry>

You didn't capital the last </Entry>, and like Tan said, you didn't add the </CATEGORY> at the end.

Also, at that little area that I said above, You didn't capital the N in Name.

Try this for your script

Spoiler below!

<LANGUAGE>
<CATEGORY Name="CustomStoryMain">
<Entry Name="Description">The old ancient castle of Leinch has got it's rumors. One of 'em is that the Devil is controling the castle and the other is that the Owner is crazy. Do you dare to check if they're true?.</Entry>
</CATEGORY>
<CATEGORY Name="Inventory">
//Key hall2
<Entry Name="ItemDesc_keyhall2">Key to the library</Entry>
<Entry Name="ItemName_keyhall2">Library Key</Entry>
//Key office
<Entry Name="ItemName_office_key">Office key</Entry>
<Entry Name="ItemDesc_office_key">A nice key that is needed to lock and unlock the office.</Entry>
</CATEGORY>
<CATEGORY Name="Level">
<Entry Name="room_prison">To the Prison</Entry>
</CATEGORY>
</LANGUAGE>

(DON'T WORRY THERE IS NO REAL SPOILERS, I JUST PUT THE FILES IN SPOILER TAGS TO MAKE IT EASIER )