Jenny_Lea's idea is actually great. If a program like P3DOExplorer can convert between RSR's and PNG's it is certainly a doable way. But other than that, yes, basically if the content was ABC.CR2 (or PP2 or whatever) ABC.PNG ABC.RSR then it would be safe to delete the RSR In those cases where the png is "empty". It MAY have to do with the number or colours displayed on your screen, 16 or 24 bit colour. Sometimes 16bit displays do funky things to pngs. But yeah, move it to a (compressed) folder somewhere, then you could salvage a file if the thumbnail suddenly turned up empty :o) Ockham I am sure that if anybody can do it, you can!

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