Today I had a similar problem to the one in this post – but instead of hanging, Flash Builder just failed to start up and quit during the “loading workbench” phase of initialization.
In the earlier post, I mentioned deleting a .snap file in [workspacelocation]/.metadata/.plugins/org.eclipse.core.resources, but previously I hadn’t been able to find it. This time, there WAS a .snap file in that folder, but it was hidden.
Deleted it, and Flash Builder starts up like a champ.
I use FlashDevelop for a lot of work projects. It’s a much better IDE for writing code-based ActionScript 3 projects than Flash itself.
Today, out of the blue, it started freezing on startup while trying to load the last project I had open. I thought I’d post about it in case a.) it ever happens to me again, or b.) it helps you, dear reader.
A quick Google search produced this forum thread, which solved it for me.
The solution was to rename/delete the file C:\Users\[USERNAME]\AppData\Local\FlashDevelop\Data\ProjectManager\Settings.fdb, which probably got corrupted.
Back to work! 🙂