Thanks for your post. I have been experiencing this exact same problem. I have Latest system 10.10.4, on a macbook pro 2011 Latest versions of all adobe CC apps (but not all apps installed: Ps, Ai, Indd, acrobat and a few vide editing aps to name a few) Latest version of flash, installed from adobe website through their 1-2-3 step process only. Never downloaded Flash from any other source. What i have to add is this: This 'Shadow disk image' (or whatever it is), will appear randomly, but primarily after a system wake from sleep. Sometimes MULTIPLE instances will appear on the desktop. I have had this same behaviour on my work iMac (similar age as Macbook pro, similar specs,similar Adobe CC installation set) I also think this is a rogue application/malware. Next time i see it happen ill follow Pijyush's directions to post more relevant info, but thought it important to chime in here, cos i just noticed this weird disk image appear and again (i have yet to actually 'open' even the dmg that appears mounted on the desktop). It happened just now, and this is why i googled, and found ONLY THIS ONE THREAD, related to the issue. so it seems it is not yet well known about. Today 20/07/2015, I downloaded some update from adobe—illustrator. finished my work, closed the laptop and left work. Reopened the laptop a little later and find this disk image mounted on the desktop. Trashed it Thought this to be too common an occurance so decided to google.
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