JAL-2047 trapped block that could likely cause ClassCastException

diff --git a/src/jalview/fts/core/FTSDataColumnPreferences.java b/src/jalview/fts/core/FTSDataColumnPreferences.java
index 1e38260..eb7455e 100644 (file)
--- a/src/jalview/fts/core/FTSDataColumnPreferences.java
+++ b/src/jalview/fts/core/FTSDataColumnPreferences.java
@@ -68,8 +68,12 @@ public class FTSDataColumnPreferences extends JScrollPane
           FTSRestClientI ftsRestClient)
   {
     this.ftsRestClient = ftsRestClient;
+    if (source.equals(PreferenceSource.STRUCTURE_CHOOSER)
+            || source.equals(PreferenceSource.PREFERENCES))
+    {
     structSummaryColumns = ((PDBFTSRestClient) ftsRestClient)
-            .getAllDefaultDisplayedStructureDataColumns();
+              .getAllDefaultDisplayedStructureDataColumns();
+    }
     allFTSDataColumns.addAll(ftsRestClient.getAllFTSDataColumns());
 
     tbl_FTSDataColumnPrefs.setAutoCreateRowSorter(true);