Files are corrupt when transfer complete

[ND-]

I've had a lot of problems with ZA. I even have the "files too small" problem and that just started happening one day, and when I tried to disable ZA it didn't happend (tested this for a few days, just to make sure).
When it comes to other software, ZA liked to reset my settings, so it refuses to let software access the internet (that was a while since it happend thou).

As to other ftp programs, I have no idea.. not used another for several years.