Currently I am not being able to install .net 3.5 on vista based compaq presario laptop. configuration is quite lastest. but getting error in installation.
I tried .net 4 successfully but to run some forex software I need exactly 3.5. PL ADVICE?

I need to install .net framework to use forex software. Need urgent
So i just removed .net framework 4 and tried to again for 3.5 installation. It shows An error occured during setup all installed files have been removed.

Do I have wrong setup file. I don’t think so. But 4th version worked fine before. Is it vista error do i need win7 or something?