improved the error handling

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@21858 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/XmlFile.java

@@ -128,6 +128,8 @@ public final class XmlFile {
             throw new IOException2("Unable to read "+file,e);
         } catch(ConversionException e) {
             throw new IOException2("Unable to read "+file,e);
+        } catch(Error e) {// mostly reflection errors
+            throw new IOException2("Unable to read "+file,e);
         } finally {
             r.close();
         }
@@ -148,6 +150,8 @@ public final class XmlFile {
             throw new IOException2(e);
         } catch(ConversionException e) {
             throw new IOException2("Unable to read "+file,e);
+        } catch(Error e) {// mostly reflection errors
+            throw new IOException2("Unable to read "+file,e);
         } finally {
             r.close();
         }