If the box is getting to 49 and then stopping then it's likely to be a skin or plugin issue.
You say it stops at 49, does it then restart at 0 or just sit there at 49?
Have you installed the wooshbuild setup plugin or Just flashed open ATV?
You are trying to install Wooshbuild Infinity and not just Wooshbuild aren't you?
If it just sits there then you can install puty on your pc/laptop and then telnet in, you should be able to use the box name as the host when telnetting to the box, ie zgemmah5 but that assumes you have flashed with the correct atv image in the first place. you should be using one of the images at
openATV Nightly Downloads