.NET framework 2.0 is part of the operating system, so long as you're running Vista or later. A fault in one of its files seems to be causing these errors, so a System File Check should repair it. To do this,
- Close down all running programs.
- Press Windows key + R, type cmd and press Ctrl-Shift-Enter (all three keys at once) to open an administrator command window. Give UAC permission.
- In the command window, type
sfc /scannowand press Enter. Note the space before /
Please tell us what happened.