add:  if (!d.targetChromosome) { return ""; }  
context: var blatResRender = function(d, metadata, record, row, column, store  ) {	var res = "chr" + d.targetChromosome.name + " (" + d.strand + ") " + d.targetStart + "-" + d.targetEnd;		var organism = d.targetChromosome.taxon;	var database = getDb(organism);	if (database) {		var link = "http://genome.ucsc.edu/cgi-bin/hgTracks?org=" + organism + "&pix=850&db=" + database + "&hgt.customText=" + GEMMA_BASE_URL + "blatTrack.html?id=" + d.id;		res = res + "&nbsp;<a title='Genome browser view (opens in new window)' target='_blank' href='" + link + "'><img src='" + UCSC_ICON + "'  /></a>";	}	return res;};
meta: 2891	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2891/c48b60591a297c92c9da06f1c26c50bab7100200/probe.grid.js/buggy/gemma-web/src/main/webapp/scripts/ajax/probe.grid.js