Tried not using / as the first character? E.G. Test.txt instead of /Test.txt
The file operations have some protection in to stop you writing all over the hdd so it could be stopping you from doing this, since on linux you'd be writing to the root of the drive
function fileExists(path) { try { local myfile = file(path, "r"); } catch(myfile) { return 0; } return 1; } if file exist is no problem... but if isn't it have errors