I did this search (example):
http://wiki.modxcms.com/index.php/Special:Search?search=whatever&go=Go
and got this error message:
Database error
From MODx Wiki
You searched for whatever
A database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was:
(SQL query hidden)
from within function "". MySQL returned error "145: Table ’./modxcms/searchindex’ is marked as crashed and should be repaired (localhost)".
