The log file is required during trouble shooting. The log file names are EMSAppLog.*
Windows OS (EN):
Inside your home folder is a Library folder. This folder is accessible only to you, and it’s used to store your Xink log file (among other personal settings, application-support files etc.).
Starting in Lion, and continuing in Mountain Lion, Mavericks, and Yosemite, Apple has made the Library folder invisible.
As the Library folder is hidden, all you need to do is hit Command + Shift + G from your Mac desktop (or Finder - Go - Go to Folder) and type in ~/Library to temporarily access the Library path in the Finder.
From there you'll want to find the Logs Folder.
Within that folder, will be a copy of your log file.