Comment 2 for bug 1152396

Very likely another duplicate of
- Bug #418242 "Incorrect call to output plugins (with persistent error message) on copy"
  <https://bugs.launchpad.net/inkscape/+bug/418242>

Trigger in most cases is a custom clipboard manager (e.g. when using Xfce), or a (java-based) download manager. Other duplicates confirm the same issue when running Netbeans or OpenOffice at the same time as Inkscape.

There is no fix available at the moment - the current known workaround is e.g. to disable the clipboard monitoring of download helper apps.