Oh...I see. This makes latest FBX SDK incompatible with older FBX files, because I’m unable to read the information from the file.

I see three options:
1) Read current file with latest FBX SDK. This doesn’t work.
2) Insert “LastSaved|ApplicationName” and “LastSaved|ApplicationVersion” properties (with nesting sections) into current file. I tried that (just inserting these fields into text as experiment). It doesn’t work - latest FBX SDK just ignores these fields, because FBXVersion is 6100. Changing FBXVersion to 7100 allows me to read the file, but then I’m sure there will be problems with the rest of the file.
3) Write FBXVersion=7100 and add “LastSaved|ApplicationName” and “LastSaved|ApplicationVersion” properties. That would work, but it requires a lot of changes in Blender (and other software with the same issue) and I would still be unable to get the same information from older versions of Blender. So it’s not really an option either.

Is there another workaround?

Many thanks,
Paulius

I’m aware of that structure and we’re using it.

Yes, other software can write that info, but there are problems (see my reply to Viviane’s post).

Yes, I’m aware that these files are not written by FBX SDK, but that doesn’t make them invalid. Having Creator field outside of FBXHeaderExtension was part of the standard, see here:
http://download.autodesk.com/us/...6f.htm,topicNumber=d0e127

I know that I can parse it myself and I was considering it at some point. Thanks for the hint! but unfortunately reading same file twice has serious performance implications…