ContributionsMost RecentMost LikesSolutionsRe: Error: Unable to get property 'prototype' of undefined or null reference HiTracey_H Our IT guy has done this. Can you let me know which addresses need to be added to trusted? Thanks Error: Unable to get property 'prototype' of undefined or null reference Hi, I am trying to log in to MYOB AccountRight desktop and am getting this error message attached in the file. Can you please advise how to fix? Thanks