I just had a quick scan of the incident report (https://llis.nasa.gov/llis_lib/pdf/1009464main1_0641-mr.pdf) and:

> "The output from the SM_FORCES application code as required by a MSOP Project Software Interface Specification (SIS) was to be in metric units of Newtonseconds (N-s)"

(MSOP = Mars Surveyor Operations Program). One of the recommendations was

> "Conduct software audit for specification compliance on all data transferred between JPL and Lockheed Martin Astronautics"

So yes, NASA should have checked the provided software more thoroughly, but also Lockheed should have actually followed the spec they were given. I doubt the SIS is available online to check any harder