Keep getting a weird new error whenever I try and post on my forum...

[WolfWonderess]

I keep getting this strange error now whenever I try and post or edit a post on my phpBB forum:

Error in deleting post

DEBUG MODE

SQL Error : 1016 Can't open file: 'phpbb_search_wordmatch.MYI' (errno: 145)

DELETE FROM phpbb_search_wordmatch WHERE post_id IN (8491)

Line : 419
File : /www/e/earthspirits/htdocs/forum/includes/functions_search.php
O.o Anyone know what's up with that?

EDIT:

Gettin' a new one now.

Could not insert new word

DEBUG MODE

INSERT IGNORE INTO phpbb_search_wordlist (word_text, word_common) VALUES ('fdsdsffsdsfd', 0)

Line : 234
File : /www/e/earthspirits/htdocs/forum/includes/functions_search.php
Oiii...

EDIT 2:

And yay...now I can't even VIEW my forum, because of this error:

Could not query forums information

DEBUG MODE

SQL Error : 1016 Can't open file: 'phpbb_posts.MYI' (errno: 145)

SELECT f.*, p.post_time, p.post_username, u.username, u.user_id FROM (( phpbb_forums f LEFT JOIN phpbb_posts p ON p.post_id = f.forum_last_post_id ) LEFT JOIN phpbb_users u ON u.user_id = p.poster_id ) ORDER BY f.cat_id, f.forum_order

Line : 167
File : /www/e/earthspirits/htdocs/forum/index.php