[...]

> queryaction::search_single_collections: call to QueryFilter failed for pdftes collection (system problem)
> warning: lookup for node "browse" failed for browsefilter.
> warning: lookup for node "browse" failed for browsefilter.
> warning: lookup for node "browse" failed for browsefilter.
> warning: lookup for node "browse" failed for browsefilter.
> system problem: could not do search with mg for index "dtx".

[...]

> I don't understand the reference to a "pdftes collection", as it is not
> one of my collections.

this log file contains all errors, not just "recent" errors, so this
would imply that at same stage in the past, you had a collection called
"pdftes". That looks suspiciously like the sort of name that the
Collector web interface might automatically come up with - are you sure
you didn't use the Collector to create a collection called "PDF Test" or
something?

Greenstone collections have a long meaningful name, and a shorter name
consisting of up to 8 letters and no spaces, to make up for deficiencies
in some Microsoft file systems.

John McPherson