I have indxr installed on: http://indxr.DOMAIN-NAME.org/
And I get this error only when the name of a folder for pictures is named the same as DOMAIN-NAME. This is the error:
Warning: opendir(/domains/indxr..org/html/) [function.opendir]: failed to open dir: No such file or directory in /path/to/domain/this/isnt/real/domains/indxr.DOMAIN-NAME.org/html/.indxr/list.php on line 528