I have a project using the netbeans matissee / gui builder plugin. I recently reinstalled netbeans and had to reopen my cvs (yes, old school rcs I know) netbeans project. After struggling through trying to figure out how to get netbeans to open the project, I thought that I would quickly drop this post.
For a long time, the only thing that I could get netbeans to do was to say “unrecognized project; missing plug-in?” when trying to open my project. I finally figured out how to get rid of that annoying (and scary) message.
I “think” all that I did was open some of the files from my project including the matissee / gui builder files. Then I closed the files and then tried to open the project.
This time the project tool recognized my project!
Thankfully I don’t have to re-add all the files to a new project, which was my last resort.