message: Remove calls to other plugin
  Plugins cannot call other plugin API, removing for now.
diff: #include <avogadro/core/molecule.h>
  #include <avogadro/io/poscarformat.h>
  -#include <avogadro/qtplugins/openbabel/obfileformat.h>
  #include <QDebug>
  @@ -72,14 +71,7 @@ bool ImportCrystalDialog::importCrystalClipboard(Avogadro::Core::Molecule& mol)
  else {
  // We don't need to set any of the info, so just put in empty strings for
  // most arguments (except the extension)
  - vector<string> fileExtensions, mimeTypes;
  - fileExtensions.push_back(ext);
  - OBFileFormat ob("", "", "", "", fileExtensions, mimeTypes);
  - if (ob.read(s, mol))
  - return true;
  - // Print out the error messages from the read if we failed
  - else
  - qDebug() << QString::fromStdString(ob.error());
  + qDebug() << "Failed to recognize data.";
  }
  displayInvalidFormatMessage();
  return false;
  