diff --git a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
index fc5b612..9bc3091 100644
--- a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
+++ b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
@@ -256,7 +256,7 @@ public class BioFormatsImageInfo {
         } else {
             final String path = args[0];
             try {
-                DebugTools.enableLogging("ERROR");
+                DebugTools.enableLogging("OFF");
                 format = readMetadata(path, metadata);
                 BioFormatsImageThumbnail.readThumbnail(path, thumbnail);
             } catch (Throwable t) {
diff --git a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java
index 81044fc..94b7941 100644
--- a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java
+++ b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java
@@ -157,6 +157,8 @@ public class BioFormatsImageThumbnail {
             reader.setId(path);
         } catch (FormatException | IOException e) {
             throw new BioFormatsImageException("unsupported file: " + path);
+        } catch (Throwable t) {
+            throw new BioFormatsImageException(t);
         }
         try {
             int series = 0;
@@ -256,7 +258,7 @@ public class BioFormatsImageThumbnail {
         }
         final String path = args[0];
         try {
-            DebugTools.enableLogging("ERROR");
+            DebugTools.enableLogging("OFF");
             BufferedImage image = getImageFromBioFormatsFile(path);
             final String format = image.getColorModel().hasAlpha() ? "png" : "jpeg";
             // image = resize(image, 160, 160);