"Oh! The software is incompatible with your system!" they say with a fake look of horror on there face's
"We will have to carry out some software engineering on the program."
Can you hear the till ringing?
Congratulations! you have fallen for the latest reincarnation of the oldest trick in the book. get as much money as you can out of the suckers!
Take my advice do not fall for it. ask for clarification and if you are in the UK threten them with the Trades Descriptions Act - goods supplied unfit for purposes they were intended.
to consistently produce software based systems
that are acceptable against the needed criteria
(reliability, maintainability, security, safety,
efficiency, usability) in a cost effective way.