[TxMt] Vanishing project window under 1.1b15

A colleague recently upgraded to 1.1b15, and since doing that she cant get project windows to appear, they are listed as being open under the window menu, but cannot be seen onscreen - is this a known problem? She isnt running Tiger, whereas I am and have no problem with b15, could this have something to do with it?

Regards

Chris Jenkins

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