What malfunctions make your work more difficult?

Question: What malfunctions make your work more difficult?
- Keywords:
  difficult,
  malfunction,
  wrong
Asked by Percabeth4ever2 to Andrew, Angela, Eleanor, Emma, Withdrawn on 10 Mar 2016.
- Andrew Pidgeon answered on 10 Mar 2016:
  
  when the client (the person paying for the project) changes their mind and wants something different
- Eleanor Sherwen answered on 10 Mar 2016:
  
  We moved factory recently and it caused a lot of disruption to the CAD software we use, that was really tricky!

Question: What malfunctions make your work more difficult?