Comment 6 for bug 1214589

when asking questions in comments, you should subscribe to the question to get notified.
I have done this for you this time.
But it is nearly always a better, to start your own question.

--- your question
The OCR and text search feature in Sikuli still is weak, especially with smaller fonts or text on not-plain backgrounds.
So before starting complex things with it, you should test, wether it works in your situation.

easy test:
print selectRegion().text()

you simply select a specific region containing the text (the file name) in your case and look what Sikuli reads.

If it works, the you have to find an approach with find(text), that works.
Restricting the region as small as possible is always a good idea in any case of finding something.