Subclipse complains "Path is not a working copy" after moving workspace

I just did a "Team -> Cleanup" and this exact error went away! I also got this error because I moved between machines and the path wasn't the same.

Using Eclipse 3.6 and the Subversion 1.6 plugin.

Update in 2016: Still works perfectly with Eclipse 4.5.2 and Subclipse 1.10.

You need to delete the .syncinfo files. This is easily done (in most cases) by closing and opening Eclipse, however you can also do so manually as in the following:

To delete the cache, close Eclipse. The cache is stored in:

[workspace]/.metadat​a/.plugins/org.eclip​se.core.resources/.p​rojects/PROJECTNAME/​.syncinfo

So you can just find and delete all files named .syncinfo in

[workspace]/.metadat​a/.plugins/org.eclip​se.core.resources/.p​rojects

Quoted from this article: http://subclipse.tigris.org/ds/viewMessage.do?dsForumId=1047&dsMessageId=868799

Edited to add: Nope, spoke too soon. This doesn't fix it. Some files just seem not to exhibit the problem.

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The following seems to solve the problem:

1. Team > Disconnect.
2. Quit Eclipse.
3. Blow away .metadata/.plugins/org.tigris.subversion.subclipse.*.
4. Restart Eclipse.
5. Team > Share.

Not sure how the old path was actually being stored in the plugin prefs, but it must have been in there somehwere. It's kind of pathetic of Subclipse to store absolute paths, but apparently it is.

There's a bug filed on this, or at least on the same error message. No context. Fifty cents says it gets rejected.