I didn't encounter any errors while trying to use the Forge src, but I don't know what source code to edit now that I've installed Forge. I was using Netbeans without a problem before I installed Forge, but it's obvious by the sparse amount of files in the directory I used before and the huge amount of errors Netbeans brings up that I can't use that directory anymore. How can I set up Netbeans to use the new folder system that Forge seems to introduce?
At first, I thought it was a problem with the installation, so I deleted the mcp72 and .minecraft folders, then I downloaded mcp again and regenerated the .minecraft folder. Then I downloaded a minecraft_server.jar file from minecraft.net and placed it in the "mcp72/jars" folder, then I copied the "bin" and "resources" folders from the .minecraft folder to the "mcp72/jars" folder. I downloaded the forge src again and placed the "forge" folder into the "mcp72" folder. Mcp comes with fernflower, so I didn't have to download that. Then I ran the "install" file int the "forge" folder and it decompiled sucessfully, with no errors. My original Netbeans setup didn't work at all, though, and I have no idea where I'm supposed to change the code.