Cannot upload anything, avr-g++ problem (solved)

I keep trying to upload prograrms to my arduino board but the same error shows up every time:

Cannot run program "D:\arduino-1.0\hardware\tools\avr\bin\avr-g++": CreateProcess error=2, The system cannot find the specified file

I'd really preciate it if you could give me some help as my project is currently paralized.
Thanks for reading.

(edited)
I already solved it, appearently, my anti-virus was blocking this file.