So I rooted my NC using manualnooter 4.5.6 because I already had 1.2 installed and I just can't seem to get any good apps installed. I have been reading all of these stickies and FAQs but can't seem to figure out this road block. So on the market version of installing apps, I already had to fix the market so it will show a full list of apps that I want to install, as described in the FAQ. I was able to successfully install Astro File Manager as recommended here, but it keeps saying "install unsuccessful" when I try to install any others. I have already rebooted the NC a couple of times since then. So then I tried to install an .apk from the SD card that I downloaded from getjar using the instructions in the FAQ. Astro File Manager is saying that my "phone does not let me install non-market apps". So does anyone know why the market install is not working, or know of a way to tell my NC to allow SD card app installs?