diff --git a/src/main/java/org/bdware/sc/ContractClient.java b/src/main/java/org/bdware/sc/ContractClient.java
index a105b50..e7c299d 100644
--- a/src/main/java/org/bdware/sc/ContractClient.java
+++ b/src/main/java/org/bdware/sc/ContractClient.java
@@ -253,10 +253,11 @@ public class ContractClient {
         if (contractMeta.contract.getRemoteDebugPort() != 0) {
             pbParameters.add(String.format("-agentlib:jdwp=transport=dt_socket,address=%d,server=y,suspend=n", contractMeta.contract.getRemoteDebugPort()));
         }
+        File classParent = new File(classpath).getParentFile();
         if (contractMeta.contract.isDebug()) {
-            pbParameters.add("-Dlog4j.configurationFile=./log4j2.debug.properties");
+            pbParameters.add("-Dlog4j.configurationFile=" + new File(classParent, "log4j2.debug.properties").getAbsolutePath());
         } else {
-            pbParameters.add("-Dlog4j.configurationFile=./log4j2.properties");
+            pbParameters.add("-Dlog4j.configurationFile=" + new File(classParent, "log4j2.properties").getAbsolutePath());
         }
         pbParameters.add("-jar");
         pbParameters.add(classpath);
@@ -269,6 +270,7 @@ public class ContractClient {
         pbParameters.toArray(result);
         Constructor<ProcessBuilder> pbc = ProcessBuilder.class.getDeclaredConstructor(String[].class);
         builder = pbc.newInstance(new Object[]{result});
+
         File directory = new File("./");
         LOGGER.debug("[CMD] path: " + directory.getAbsolutePath());
         LOGGER.debug(JsonUtil.toPrettyJson(builder.command()));
diff --git a/src/main/java/org/bdware/sc/ContractManager.java b/src/main/java/org/bdware/sc/ContractManager.java
index 04c8a56..3f1c9b0 100644
--- a/src/main/java/org/bdware/sc/ContractManager.java
+++ b/src/main/java/org/bdware/sc/ContractManager.java
@@ -973,6 +973,7 @@ public class ContractManager {
         }
         return null;
     }
+
     private void setContractStateful(Contract c) {
         ContractManifest cm = YJSPacker.getManifest(c.getScriptStr());
         if (cm != null && cm.stateful != null && cm.stateful.equals("false")) {
@@ -1770,6 +1771,7 @@ public class ContractManager {
 
     public String loadMemory(ContractClient client, String path) {
         if (client == null) return "no such contract client";
+        if (path == null || path.length() == 0) return "no such memory file";
         addLocalContractLog("loadMemory", client.contractMeta);
         return client.get.syncGet("", "loadMemory", path);
     }
diff --git a/src/main/java/org/bdware/sc/ContractStatusRecorder.java b/src/main/java/org/bdware/sc/ContractStatusRecorder.java
index f80aee9..be1b26e 100644
--- a/src/main/java/org/bdware/sc/ContractStatusRecorder.java
+++ b/src/main/java/org/bdware/sc/ContractStatusRecorder.java
@@ -360,11 +360,9 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                 // 可增加一个判断，如果hanged朋manifest里是加载memory，这里就不再加载了。
                 ContractClient client = id2ContractClient.get(meta.getID());
                 if (preStatus == ContractStatusEnum.HANGED) {
-
-                    ContractManager.instance.loadMemory(
-                            client, ContractManager.instance.findNewestMemory(meta.name));
-
-
+                    String memory = ContractManager.instance.findNewestMemory(meta.name);
+                    if (memory != null)
+                        ContractManager.instance.loadMemory(client, memory);
                 }
                 client.contractMeta.setStatus(ContractStatusEnum.RUNNING);
                 updateValue(client.contractMeta);