ISO files, some work some dont?

I have some dvds i have made into iso files and they work fine. But i have some home videos i have made into iso files through a program called Pinnacle that it will not open. They all worked fine on my freeagent theatre plus (FAT+). I have changed them into the video/audio ts files and cant get them to open either. ANy ideas on what i can do to get them to work.

Apparently Pinnacle is a problem, so try making iso files with another program.  Or, perhaps you home movies can’t be made into iso file.  I wouldn’t know, because I never wasted my time that way.  I just watch my home movies via the WD player as they are – most are mp4 files.  What file format are you home movies in?  Are they on DVDs?