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I recently installed PM 4.5.4 on my iMac with Leopard OS...I cannot get it to hide...I click on Hide Photo Mechanic and nothing happens, which was NOT the case with 4.5.3. Suggestions??
Apparently there WAS something interfering with the ability to hide the application. I have no idea what it was, but when I restarted, it seemed to be working. Thanks though!!!