diff --git a/gate/main.c b/gate/main.c
index 52c5b4ce..79545687 100644
--- a/gate/main.c
+++ b/gate/main.c
@@ -203,7 +203,7 @@ _cb(struct skynet_context * ctx, void * ud, int type, int session, uint32_t sour
 			goto _break;
 		}
 		// big-endian
-		uint16_t len ;
+		int len ;
 		if (g->header_size == 2) {
 			len = plen[0] << 8 | plen[1];
 		} else {
diff --git a/skynet-src/skynet_server.c b/skynet-src/skynet_server.c
index 30d86a90..79bf6c3e 100644
--- a/skynet-src/skynet_server.c
+++ b/skynet-src/skynet_server.c
@@ -92,6 +92,7 @@ skynet_context_new(const char * name, const char *param) {
 			ctx->init = 1;
 		}
 		skynet_mq_force_push(queue);
+		printf("[:%x] launch %s %s\n",ret->handle, name, param ? param : "");
 		return ret;
 	} else {
 		skynet_context_release(ctx);
@@ -414,7 +415,6 @@ skynet_command(struct skynet_context * context, const char * cmd , const char *
 			return NULL;
 		} else {
 			_id_to_hex(context->result, inst->handle);
-			printf("[:%x] launch %s\n",inst->handle, param);
 			return context->result;
 		}
 	}
diff --git a/skynet-src/skynet_start.c b/skynet-src/skynet_start.c
index bad00b38..509669cb 100644
--- a/skynet-src/skynet_start.c
+++ b/skynet-src/skynet_start.c
@@ -79,10 +79,14 @@ skynet_start(struct skynet_config * config) {
 	struct skynet_context *ctx;
 	ctx = skynet_context_new("logger", config->logger);
 	if (ctx == NULL) {
-		return;
+		fprintf(stderr,"launch logger error");
+		exit(1);
 	}
 	ctx = skynet_context_new("snlua", "launcher");
-	assert(ctx);
+	if (ctx == NULL) {
+		fprintf(stderr,"launch launcher error");
+		exit(1);
+	}
 	ctx = skynet_context_new("snlua", config->start);
 
 	_start(config->thread);