Picture turns into blue question mark icon
There is a complication. I have been refused access to the actual "members only" section of this dutch-language hockey club site which is where that failing photo is residing.
I have therefore asked my nephew to send me by email the same picture in the same format, etc. (jpg or whatever) he sent it to the club ( http://www.ihcl.be/ks/ ). Haven't received anything yet.
My suspicion is like you that there might be a characteristic to the transfer (his father also uses a Windows Vista pc) that might make it illegible on a Mac. Since my iMac registers all types of pictures from Mac or pc sources. the email Nikon photo I requested might reveal a missing plug-in on the Powerbook as you indicated. "Switching" is not always an easy road...
Thanks for your efforts. 'll keep you informed.