Skip unparsable documets wihout exception

src/net/java/sip/communicator/impl/history/HistoryImpl.java

@@ -227,8 +227,11 @@ protected Document getDocumentForFile(String filename)
                     retVal = builder.parse(file);
                 } catch (Exception e)
                 {
-                    throw new RuntimeException("Error occured while "
-                            + "parsing XML document.", e);
+//                    throw new RuntimeException("Error occured while "
+//                            + "parsing XML document.", e);
+//                    log.error("Error occured while parsing XML document.", e);
+                    log.error("Error occured while parsing XML document.");
+                    return null;
                 }
 
                 // Cache the loaded document for reuse if configured

src/net/java/sip/communicator/impl/history/HistoryReaderImpl.java

@@ -160,6 +160,12 @@ public synchronized QueryResultSet findLast(int count) throws RuntimeException
             Document doc = this.historyImpl.
                 getDocumentForFile( (String) filelist.get(currentFile));
 
+            if(doc == null)
+            {
+                currentFile--;
+                continue;
+            }
+
             // will get nodes and construct a List of nodes
             // so we can easyly get sublist of it
             List nodes = new ArrayList();
@@ -313,6 +319,9 @@ private QueryResultSet find(
 
             Document doc = this.historyImpl.getDocumentForFile(filename);
 
+            if(doc == null)
+                continue;
+
             NodeList nodes = doc.getElementsByTagName("record");
 
             double nodesProgressStep = fileProgressStep;

src/net/java/sip/communicator/impl/history/HistoryWriterImpl.java

@@ -176,6 +176,13 @@ private void createNewDoc(Date date, boolean loadLastFile)
                 this.currentFile = file;
                 loaded = true;
             }
+
+            // if something happend and file was not loaded
+            // then we must create new one
+            if(this.currentDoc == null)
+            {
+                loaded = false;
+            }
         }
 
         if (!loaded)