http://bugs.winehq.org/show_bug.cgi?id=35003
--- Comment #15 from Vincent Povirk madewokherd@gmail.com 2013-11-29 12:59:42 CST --- I sent a patch for the read_scanlines error: http://www.winehq.org/pipermail/wine-patches/2013-November/128719.html
But it seems that error was actually caused by ads rather than thumbnails, so it may be nothing to do with your crash.
Just to be clear, I'm not expecting any additional lines of output with debugging symbols installed, but the backtrace should contain source filenames and line numbers, like the example on http://wiki.winehq.org/Backtraces
Or if you can explain how to import your shared note in the program, I will try that here.