The new Windows Media Player all ways sets the "Shared" folder to read only if you play any files from this folder. That's why LimeWire can't save any files their and says it was an 'invalid saving directory'.

LimeWire must have write access in order to save files there.

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Morgens ess ich Cornflakes und abends ess ich Brot
Und wenn ich lang genug gelebt hab, dann sterb ich und bin tot

--Fischmob