AutoHotkey installation error pops up

Hello there,
When I try to install the AutoHotkey, an error pops up after a while. For your information the download went pretty well and good. I have windows 8 64 operating system, 250GB hard disk. I don’t understand the error, so I have attached the error image, please do check it and explain me. Your help is really great.

Installation Error!
Couldn’t copy “C:Program FilesAutoHotkeyCompilerAutoHotkeySC.bin” to “C:UsersAaronAppDataLocalTempAutoHotkeyCompiler”.
