Yes, that was a bug in InDesign CS5 -- they failed to read the spot channel and alpha channel information correctly from the Photoshop metadata (somehow their code was about 7 years behind).
That is fixed in InDesign CS6.
Yes, but photoshop CS5 and indesign CS5 work perfectly together ... Tiff create with PS CS5 was good for use in ID CS5 with alpha channel and was working fines... so it's was not really a big bug because it was working
But now, it's a big problem , because i've a lot of client that are working with indesign CS5 and i'm working with CS6...So when i delivre my images, they can't use it in ID .... Do you know a solution to export tiff images from AE or PS CS6 (with alpha channel) that are compatible with ID CS5 ?
Why are you not using psd files?
Why are you flatting the file, keep them as layers (or reduce them to one layer) and use alpha transparency.
I think ID CS5.5 had an update to fix the bug in their code, and ID CS6 has it fixed.
But I don't believe they updated ID CS 5.0.
Try using a PSD file - but they may have the same bug in ID.
Curious to hear how you made out since we are having this problem with Photoshop CS6 TIFFs as well.
Would be nice to know if Adobe was going to patch CS5 or not I would rather not save images in alternate formats in order to avoid having to manually re-link large numbers of images in InDesign CS5.
The problem is not in Photoshop, the problem is that InDesign failed to update their TIFF reading code after 7 years or more.
I doubt that InDesign will be patching CS5.