The most common and most likely answer to this crossword clue is the 5 letter word DEBUG
I've seen this crossword clue in The Daily Telegraph
D
E
B
U
G
More clues leading to the result DEBUG
- GB due, amazingly, to do software fix
- First performance not entirely good, correct program
- Correct girl coming out, huge when undressed
- Investigated, holding back live work on code
- Fancied ringing English club, finally finding correct code?
- Start replacing tons with grams in correct code
- First attempt mostly good? Correct
- Young socialite, upper-class, grand, to scrub drive
- Remove errors from first performance: time to be good
- Young girl and judge regularly put things right
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DEBUG mean?
DEBUG noun- The action, or a session, of reviewing source code to find and eliminate errors.
- To search for and eliminate malfunctioning elements or errors in something, especially a computer program or machinery.
- To remove a hidden electronic surveillance device from (somewhere).
- To remove insects from (somewhere), especially lice.