Traktor "Could not read collection/playlist file"

I just updated Traktor & I keep getting this error, if I load any track they're file, but when I start Traktor it tries to analyze my whole library. Any idea how to fix this?Attachment 26616

What have you upgraded from?
I had same issue going to 2.6 from a pre 2.5 version.
The analasys details changed on 2.5, which was a major update, with addition of key on the tag and other updates, and therefore the file details are not compatible with the earlier versions with lesser features.

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thanks! I went from 2.9 to the current 2.10

Wonder if the changes between 2.9 and 2.10 were such that it needs to re-analyze tho... weird, it's not beyond the realm of possibility tho. I have looked at the release notes for 2.10, and apparently, you don't need to reanalyse everything..
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I had a similar issue, and I was able to detect the error using xmllint program and fix it.

I detailed the fix on my blog:
kig.re/2016/06/26/traktor-file-management-fixing-could-not-read-collection-playlist-file-error.html

Hope this helps!