Hmmm. I see that there is a separate forum for Flash Builder, but the most recent discussion is one year old.
I am using FB 4.6 and the current SDK.
I'm building a project that will be shipped to AIR, Mobile and Web. I've put all of the source files into a project called "commonMyProjectName" and then have 3 other projects called webMyProjectName, mobileMyProjectName and desktopMyProjectName. Each of these projects includes commonMyProjectName\src in its source path.
This approach works most of the time; however, periodically FB starts going nuts and I end up with multiple copies of many of my files opening up.
Would a better approach be to use the Run Configurations?