cant log in

[memo90061]

I am new new to all this I barely bought a domain earlier this year and recently started using coppermine for my website like two months ago. I was trying to login and it didnt let me! I would put the correct SN and password and it said welcome memo90061 and then when it took me to the main page it logged me out then i tried to register as a new user to see if with the new user I could login but now the only thing I get is

Fatal error :

I havent moved a thing :\ I dont know why it didnt let me login! I am kinda scared because I am new to all this and I really dont know a lot about sql and all that but I am willing to learn Is there something I can do to fix this? I dont want to install a brand new gallery and upload all those pictures again

this is the errror i get in that SQL thingy

SQL query: 

SELECT COUNT( * ) AS num
FROM `losaband_coppermine`.`cpg148_sessions`

MySQL said: 

#1016 - Can't open file: 'cpg148_sessions.MYI'. (errno: 145)

[Abbas Ali]

Do search before posting. This has been asked quite a few time... Anyways cpg148_sessions table got corrupted. Repair that table from a tool like phpMyAdmin (or any other tool). If you don't know how to do that then ask your webhost to repair that table.