(following is mostly for my benefit) In playing with the test version of Koha (just doing the simple things), I managed to break it. After deleting a record, OPAC searches return the following error:
Can't call method "as_usmarc" on an undefined value at /usr/share/koha/lib/C4/Search.pm line 2384.
It took a bit of search in Google but I did come across this post from Mason James. His recommendation is to run:
Problem is that if you run the above from /usr/share/koha, you receive complaints about not being able to find the Perl module C4::Context. The solution is to run the script with the full path, like:
The above rebuilds the BIBLIO and AUTHORITIES indexes and you should be able to search via the OPAC page again.