I'm running Photo Mechanic 4.6.7 on Mac OS X 10.6.7.
Portrait orientation was lost in Lightroom 3.4.1 after PM edit of NEF/JPG/XMP files.
1) Import some NEF/JPG pairs (two years old) into Adobe Lightroom 3.4.1 (LR), NEFs made with Nikon D700, once edited with and JPGs produced by Nikon ViewNX 1.5 (WinXP).
2) Portrait orientation is displayed correctly in LR, LR writes new XMP sidecar file.
3) Edit IPTC/XMP info with PM (add keywords, correct location, add photographer info), write down changes to NEF, JPG and XMP.
4) Portrait orientation is still displayed correctly in PM.
5) "Synchronise folder" in LR, read metadata changes into LR
6) LR displays portrait orientated pictures as landscape.
Any hints where to look?
My guess is that the XMP file re-written by PM contains the wrong orientation. Where is the portrait/landscape orientation coded in an XMP file?