Installing Firefox plugins issue

Question

I am trying to install my own firefox plugin. I follow this tutorial. But each time this gives me following error:-

Firefox could not install the file at 

file:///home/ubuntu/googbar.xpi

because: Install script not found
-204

Answer 1

That error means that your file doesn't have an install.rdf file . Please note that it needs to be at the top level of the XPI archive. So maybe you made a mistake packing the file and install.rdf landed in a subdirectory. You can check the list of files using unzip -l googbar.xpi command, it should list install.rdf without a directory name before it.