Do I have to get NIS 16.7.2.10 Framework error hotfix

I have had NIS 16.7.2.10 for a few days no and have had no problems. I am using Vista Ultimate.

 

Do I have to get the Framework error hotfix even though I have had no issues.

 

I fear that the hotfix may cause issues for me.

 

Why not make it optional??

 

Thanks