FlashBuilder workspace update issues

When working on several AS3 projects that share a common code base, FlashBuilder seems to be losing workspace data when switching from one project to the next. I will often get a message that such class could not be found , when the class is actually in the path but was probably modified i开发者_C百科n the previous project.

To fix this error, I find myself having to remove the external library folder , restart FB, then re-add the library folder and all is well.

Please tell me there's another way to "refresh" FB's workspace ! Have you experienced anything similar? If yes, how do you avoid this problem?

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Did you try a clean on the project?

project -> clean

You could also try to clean your workspace. In windows for example, just add -clean after the link to the exe.

Update:

on a mac, try this: http://www.brooksandrus.com/blog/2007/06/30/run-eclipse-from-the-command-line-on-os-x/