Okay, so. I downloaded it, installed it, ran it.
First thing that comes up is a too-small alert box telling me that Netbeans can’t find my JDK and and that I need to run a command.
I just installed JDK7 yesterday, so I know that’s not it. I run the command in cmd.exe, and it tells me that it’ll try and use the default location, then freezes and crashes the console. The command evidently does nothing, so I just decide to skip the Netbeans components, and continue.
I need a plugin for the game I’m “making,” Blender Support, which is in a nightly plugin repo. I add the repo, and it tells me that there is a 403 error coming back from the site. That’s cool, bad repo. 403 = Forbidden. I forget that, and go over to the list of available plugins to see if it’s there anyways, and I hit “Refresh List.” ALL the repos give either 403 or 404 errors. Also, I have double checked that the firewall is off, for all network types.
Any ideas on what the problem is? I think it might have something to do with Netbeans, but I’ve never used it before (I’ve only played around with Eclipse before) and I can only assume that from the Net-- it has something to do with the internet…
“Skipping” makes sure nothing works properly as you disable 80% of the functionality.
Kind of having some plugin problems myself. A week or so i downloaded a new sdk upgrade from the updates successfully, since then it doesn’t find any new nightlies or anything. Coincidence perhaps.
EDIT: Come to think of it, windows has been doing a series of updates lately. Maybe that’s why.
No, there simply is no nightlies since a few weeks ago cause the build is broken.
Ah. Good then it’s no worries. 
Btw @OP, theres no need to install the “Blender Support” plugin… Are you still running on an old version? 3.0beta is the current SDK version, all other versions don’t get updates anymore.
No, I am definitely running the latest jMonkeyEngine (3.0a). I just downloaded the program yesterday.
I only thought that I needed a Blender Support plugin because I couldn’t find anything on the subject aside from a youtube video showing me how to install said plugin.
Also, thank you for pointing out that link. It helped me realize that I had the wrong /type/ of java. I had the open version; not the oracle edition.
I’m re-installing jME3b now, so I’ll be back later with results.
Edit:
No Netbeans errors, no 403s or 404s, and the program is actually asking me to do updates without me hitting “Reload Catalog!”
Thanks a bunch normen!