diff --git a/duniter4j-client/pom.xml b/duniter4j-client/pom.xml
index d559dbaec338653ac6b347426019cdd457421405..93e31e27980f7411574a0e7446c3ea682ee85c6a 100644
--- a/duniter4j-client/pom.xml
+++ b/duniter4j-client/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>duniter4j</artifactId>
         <groupId>org.duniter</groupId>
-        <version>0.11.1-SNAPSHOT</version>
+        <version>0.11.2-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/duniter4j-core-client/pom.xml b/duniter4j-core-client/pom.xml
index fc68805829f20c6d385ab983f12e0322f77a187c..79b20dddef09478b351b117d552e516b5271fcd6 100644
--- a/duniter4j-core-client/pom.xml
+++ b/duniter4j-core-client/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.duniter</groupId>
     <artifactId>duniter4j</artifactId>
-    <version>0.11.1-SNAPSHOT</version>
+    <version>0.11.2-SNAPSHOT</version>
   </parent>
 
   <artifactId>duniter4j-core-client</artifactId>
diff --git a/duniter4j-core-client/src/main/java/org/duniter/core/client/model/bma/BlockchainParameters.java b/duniter4j-core-client/src/main/java/org/duniter/core/client/model/bma/BlockchainParameters.java
index d022ca0ac5662fdc5affa7f02fdd3476d2506986..98037a065be8a861073f5e1658858bb51098d07f 100644
--- a/duniter4j-core-client/src/main/java/org/duniter/core/client/model/bma/BlockchainParameters.java
+++ b/duniter4j-core-client/src/main/java/org/duniter/core/client/model/bma/BlockchainParameters.java
@@ -132,6 +132,11 @@ public class BlockchainParameters implements Serializable{
      */
     private Integer dtDiffEval;
 
+    /**
+     * The number of previous blocks to check for personalized difficulty
+     */
+    @Deprecated
+    private Integer blocksRot;
 
     /**
      * The percent of previous issuers to reach for personalized difficulty
@@ -251,6 +256,16 @@ public class BlockchainParameters implements Serializable{
         this.dtDiffEval = dtDiffEval;
     }
 
+    @Deprecated
+    public Integer getBlocksRot() {
+        return blocksRot;
+    }
+
+    @Deprecated
+    public void setBlocksRot(Integer blocksRot) {
+        this.blocksRot = blocksRot;
+    }
+
     public Double getPercentRot() {
         return percentRot;
     }
diff --git a/duniter4j-core-client/src/main/java/org/duniter/core/client/service/HttpServiceImpl.java b/duniter4j-core-client/src/main/java/org/duniter/core/client/service/HttpServiceImpl.java
index dbdb1ab496d2a9de73e2156c491385a40ce6abaf..892557eeb07fcaa1182993a7b840583026b2455d 100644
--- a/duniter4j-core-client/src/main/java/org/duniter/core/client/service/HttpServiceImpl.java
+++ b/duniter4j-core-client/src/main/java/org/duniter/core/client/service/HttpServiceImpl.java
@@ -348,6 +348,9 @@ public class HttpServiceImpl implements HttpService, Closeable, InitializingBean
         catch (SocketTimeoutException | ConnectTimeoutException e) {
             throw new HttpTimeoutException(I18n.t("duniter4j.client.core.timeout"), e);
         }
+        catch (TechnicalException e) {
+            throw e;
+        }
         catch (Throwable e) {
             throw new TechnicalException(e.getMessage(), e);
         }
diff --git a/duniter4j-core-shared/pom.xml b/duniter4j-core-shared/pom.xml
index 9c505c796c344da823941b1c2f968268a9ac553b..46ec23eeaa1a907d6bf3500f796a07d7ab947192 100644
--- a/duniter4j-core-shared/pom.xml
+++ b/duniter4j-core-shared/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.duniter</groupId>
     <artifactId>duniter4j</artifactId>
-    <version>0.11.1-SNAPSHOT</version>
+    <version>0.11.2-SNAPSHOT</version>
   </parent>
 
   <artifactId>duniter4j-core-shared</artifactId>
diff --git a/duniter4j-es-assembly/pom.xml b/duniter4j-es-assembly/pom.xml
index 9b2e24372bcd30cf4f62dea49fed18b9221066bc..66c799d12e15b31989c1f6f5153d4492782bc2dd 100644
--- a/duniter4j-es-assembly/pom.xml
+++ b/duniter4j-es-assembly/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.duniter</groupId>
     <artifactId>duniter4j</artifactId>
-    <version>0.11.1-SNAPSHOT</version>
+    <version>0.11.2-SNAPSHOT</version>
   </parent>
 
   <artifactId>duniter4j-es-assembly</artifactId>
diff --git a/duniter4j-es-assembly/src/test/es-home/config/elasticsearch.yml b/duniter4j-es-assembly/src/test/es-home/config/elasticsearch.yml
index f199e0f039ebf51b737932e2bee2fb5d98db7b5c..689c8b9416cfb495a8f88afbb85fd175dea1d92d 100644
--- a/duniter4j-es-assembly/src/test/es-home/config/elasticsearch.yml
+++ b/duniter4j-es-assembly/src/test/es-home/config/elasticsearch.yml
@@ -157,7 +157,7 @@ duniter.security.enable: true
 #
 # Should synchronize data from an existing ES node ?
 #
-duniter.data.sync.enable: true
+duniter.data.sync.enable: false
 #duniter.data.sync.enable: true
 duniter.data.sync.host: g1.data.duniter.fr
 duniter.data.sync.port: 443
@@ -166,7 +166,7 @@ duniter.data.sync.port: 443
 #
 # Enable mail module ?
 #
-duniter.mail.enable: true
+duniter.mail.enable: false
 #
 # Mail: SMTP server configuration (host and port)
 #
diff --git a/duniter4j-es-assembly/src/test/es-home/config/logging.yml b/duniter4j-es-assembly/src/test/es-home/config/logging.yml
index aa49d8762e7d0018183016ebc26469f7305d98f0..b9122182159af75a55cfd869c89af8e2a84d13ca 100644
--- a/duniter4j-es-assembly/src/test/es-home/config/logging.yml
+++ b/duniter4j-es-assembly/src/test/es-home/config/logging.yml
@@ -15,6 +15,7 @@ logger:
   com.amazonaws.metrics.AwsSdkMetrics: ERROR
 
   duniter: DEBUG
+  duniter.core: DEBUG
   duniter.security: ERROR
   duniter.user.event: INFO
   duniter.network.p2p: INFO
diff --git a/duniter4j-es-core/pom.xml b/duniter4j-es-core/pom.xml
index 80353545c8b5734ce7eb5454da8e0e61afdba977..e3741db754d1d8b761862456354121656cbe712c 100644
--- a/duniter4j-es-core/pom.xml
+++ b/duniter4j-es-core/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.duniter</groupId>
     <artifactId>duniter4j</artifactId>
-    <version>0.11.1-SNAPSHOT</version>
+    <version>0.11.2-SNAPSHOT</version>
   </parent>
 
   <artifactId>duniter4j-es-core</artifactId>
diff --git a/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/PluginInit.java b/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/PluginInit.java
index 44b58d8db750f26cf7a91afaf9e91c9faed0cc76..3ea14f071c6fa2f038911f979e3c5946cee33dd2 100644
--- a/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/PluginInit.java
+++ b/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/PluginInit.java
@@ -118,64 +118,78 @@ public class PluginInit extends AbstractLifecycleComponent<PluginInit> {
         // Synchronize blockchain
         if (pluginSettings.enableBlockchain()) {
 
+
             Peer peer = pluginSettings.checkAndGetPeer();
 
-            // Index (or refresh) node's currency
-            final Currency currency = injector.getInstance(CurrencyService.class)
-                    .indexCurrencyFromPeer(peer, true);
+            Currency currency;
+            try {
+                // Index (or refresh) node's currency
+                currency = injector.getInstance(CurrencyService.class)
+                        .indexCurrencyFromPeer(peer, true);
+            } catch(Throwable e){
+                logger.error(String.format("Error while indexing currency. Skipping blockchain indexation.", e.getMessage()), e);
+                throw e;
+            }
 
+            final String currencyName = currency.getCurrencyName();
             if (logger.isInfoEnabled()) {
-                logger.info(String.format("[%s] Indexing blockchain...", currency.getCurrencyName()));
+                logger.info(String.format("[%s] Indexing blockchain...", currencyName));
             }
 
+            // Add access security rules, for the currency indices
             injector.getInstance(RestSecurityController.class)
 
                     // Add access to <currency>/block index
                     .allowIndexType(RestRequest.Method.GET,
-                            currency.getCurrencyName(),
+                            currencyName,
                             BlockDao.TYPE)
                     .allowPostSearchIndexType(
-                            currency.getCurrencyName(),
+                            currencyName,
                             BlockDao.TYPE)
 
                     // Add access to <currency>/blockStat index
                     .allowIndexType(RestRequest.Method.GET,
-                            currency.getCurrencyName(),
+                            currencyName,
                             BlockStatDao.TYPE)
                     .allowPostSearchIndexType(
-                            currency.getCurrencyName(),
+                            currencyName,
                             BlockStatDao.TYPE)
 
                     // Add access to <currency>/peer index
                     .allowIndexType(RestRequest.Method.GET,
-                            currency.getCurrencyName(),
+                            currencyName,
                             PeerDao.TYPE)
                     .allowPostSearchIndexType(
-                            currency.getCurrencyName(),
+                            currencyName,
                             PeerDao.TYPE)
 
                     // Add access to <currency>/movement index
                     .allowIndexType(RestRequest.Method.GET,
-                            currency.getCurrencyName(),
+                            currencyName,
                             MovementDao.TYPE)
                     .allowPostSearchIndexType(
-                            currency.getCurrencyName(),
+                            currencyName,
                             MovementDao.TYPE);
 
             // Wait end of currency index creation, then index blocks
             threadPool.scheduleOnClusterHealthStatus(() -> {
 
-                // Index blocks (and listen if new block appear)
-                injector.getInstance(BlockchainService.class)
-                        .indexLastBlocks(peer)
-                        .listenAndIndexNewBlock(peer);
-
-                // Index peers (and listen if new peer appear)
-                injector.getInstance(PeerService.class)
-                        .listenAndIndexPeers(peer);
-
-                if (logger.isInfoEnabled()) {
-                    logger.info(String.format("[%s] Indexing blockchain [OK]", currency.getCurrencyName()));
+                try {
+                    // Index blocks (and listen if new block appear)
+                    injector.getInstance(BlockchainService.class)
+                            .indexLastBlocks(peer)
+                            .listenAndIndexNewBlock(peer);
+
+                    // Index peers (and listen if new peer appear)
+                    injector.getInstance(PeerService.class)
+                            .listenAndIndexPeers(peer);
+
+                    if (logger.isInfoEnabled()) {
+                        logger.info(String.format("[%s] Indexing blockchain [OK]", currencyName));
+                    }
+                } catch(Throwable e){
+                    logger.error(String.format("[%s] Indexing blockchain error: %s", currencyName, e.getMessage()), e);
+                    throw e;
                 }
 
             }, ClusterHealthStatus.YELLOW, ClusterHealthStatus.GREEN);
diff --git a/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/service/CurrencyService.java b/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/service/CurrencyService.java
index dbe90837f716c1cc882caf5e70bd6e1c2eca89f2..9511aee0ce83ea7ee26a80b8aed4dc1b3d3ced86 100644
--- a/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/service/CurrencyService.java
+++ b/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/service/CurrencyService.java
@@ -95,7 +95,9 @@ public class CurrencyService extends AbstractService {
      * @return the created blockchain
      */
     public Currency indexCurrencyFromPeer(Peer peer, boolean autoReconnect) {
-        if (!autoReconnect) return indexCurrencyFromPeer(peer);
+        if (!autoReconnect) {
+            return indexCurrencyFromPeer(peer);
+        }
 
         while(true) {
             try {
@@ -120,6 +122,7 @@ public class CurrencyService extends AbstractService {
      * @return the created blockchain
      */
     public Currency indexCurrencyFromPeer(Peer peer) {
+
         BlockchainParameters parameters = blockchainRemoteService.getParameters(peer);
         BlockchainBlock firstBlock = blockchainRemoteService.getBlock(peer, 0l);
         BlockchainBlock currentBlock = blockchainRemoteService.getCurrentBlock(peer);
diff --git a/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/threadpool/LoggingScheduledThreadPoolExecutor.java b/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/threadpool/LoggingScheduledThreadPoolExecutor.java
index 4fb5efd9bc6cd49c9d6158b333d48d38bc79166b..5f2d4270bcc25d8bea88255a0bc0a5957304f61d 100644
--- a/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/threadpool/LoggingScheduledThreadPoolExecutor.java
+++ b/duniter4j-es-core/src/main/java/org/duniter/elasticsearch/threadpool/LoggingScheduledThreadPoolExecutor.java
@@ -22,6 +22,7 @@ package org.duniter.elasticsearch.threadpool;
  * #L%
  */
 
+import org.duniter.core.exception.TechnicalException;
 import org.elasticsearch.common.logging.ESLogger;
 
 import java.util.concurrent.*;
diff --git a/duniter4j-es-subscription/pom.xml b/duniter4j-es-subscription/pom.xml
index 7d86bc1d0143039caea2f9749e8a9425fe2c81be..d96cfc71d29dba9aa075d3fcab2388420c227112 100644
--- a/duniter4j-es-subscription/pom.xml
+++ b/duniter4j-es-subscription/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.duniter</groupId>
     <artifactId>duniter4j</artifactId>
-    <version>0.11.1-SNAPSHOT</version>
+    <version>0.11.2-SNAPSHOT</version>
   </parent>
 
   <artifactId>duniter4j-es-subscription</artifactId>
diff --git a/duniter4j-es-user/pom.xml b/duniter4j-es-user/pom.xml
index aef75e177cb652afdb440d455a070095f643ee8f..8513639d13c9a89dcfcf5b875dc26850b0781a65 100644
--- a/duniter4j-es-user/pom.xml
+++ b/duniter4j-es-user/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>duniter4j</artifactId>
         <groupId>org.duniter</groupId>
-        <version>0.11.1-SNAPSHOT</version>
+        <version>0.11.2-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 28433699337641c6c0693ba17a1eb16383bfeff3..2831ed065f449e35ac1d3a50b091b0037678ba85 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 
   <groupId>org.duniter</groupId>
   <artifactId>duniter4j</artifactId>
-  <version>0.11.1-SNAPSHOT</version>
+  <version>0.11.2-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Duniter4j : a Duniter Java Client API</name>