diff --git a/sigil/common/obr/src/org/apache/felix/sigil/obr/AbstractOBRBundleRepository.java b/sigil/common/obr/src/org/apache/felix/sigil/obr/AbstractOBRBundleRepository.java
index 3e2b54d..3c30d36 100644
--- a/sigil/common/obr/src/org/apache/felix/sigil/obr/AbstractOBRBundleRepository.java
+++ b/sigil/common/obr/src/org/apache/felix/sigil/obr/AbstractOBRBundleRepository.java
@@ -84,7 +84,7 @@
                 File file = getObrlCache();
                 if ( !file.getParentFile().mkdirs() )
                 {
-                    throw new IOException( "Failed to create obr cache" );
+                    throw new IOException( "Failed to create obr cache dir " + file.getParentFile() );
                 }
                 out = new FileOutputStream( file );
                 stream( in, out );