CAUTION: The installer clobbers %PATH%. There's a path1.log file stored along side the uninstaller which you can use to rescue your %PATH% Environment Variable, but it will be deleted if you uninstall (in that case, your only recourse is to do a System Restore).
This is absolute crap. Instead of appending something to the PATH environment variable (Win7, 64bit) this installer overwrites it, leaving the rest of your system completely screwed. DO NOT INSTALL
Apparently the developer is not aware that Windows software should be installed in 'Program Files' or 'Program Files (x86)'. By default WinAVR is installed at the root. He allows installation to the standard directories, but when you install to these directories, the tools no longer work (probably because the developer does not know how to handle spaces and '('/')' in paths. These are allowed in Windows but not in Linux. The easiest fix for this error is to install in standard directory, and then create a symbolic link at the root. (something like: mklink /D C:\WinAVR C:\Program Files (x86)\WinAVR), and then fix up the environment variables to point to the right place. Also, the avr-gcc -mstrict-X option is not supported in the latest trunk binary, which ends up breaking a lot of make files.
not working for windows 8.1 can anyone suggest anything plz nedd urgently to work on it