particle::initCellFacePt(): Added suggestions to resolve failure to find particle

Resolves bug report: http://www.openfoam.org/mantisbt/view.php?id=1461

src/lagrangian/basic/particle/particleI.H

@@ -756,8 +756,14 @@ inline void Foam::particle::initCellFacePt()
                     // error.
 
                     FatalErrorIn("void Foam::particle::initCellFacePt()")
-                        << "cell, tetFace and tetPt search failure at position "
-                        << position_ << nl << "for requested cell " << oldCellI
+                        << "    cell, tetFace and tetPt search failure at "
+                        << "position " << position_ << nl
+                        << "    for requested cell " << oldCellI << nl
+                        << "    If this is a restart or "
+                           "reconstruction/decomposition etc. it is likely that"
+                           " the write precision is not sufficient.\n"
+                           "    Either increase 'writePrecision' or "
+                           "set 'writeFormat' to 'binary'"
                         << abort(FatalError);
                 }