Mistakes in your CV can be fatal to your prospects, particularly when accuracy is important to the job. When you are checking the fifth version, you tend to see what should be there, rather than what is, so errors can be missed.
As a trained career coach with experience of recruiting I am used to reviewing applications and CVs. I have also proof read legal documents to ensure accuracy.
Get a fresh pair of eyes to read your CV, and make sure your application is treated on its merits not for defects in your CV.