merge of '47a5010fef7cfb037831ae7db581e20ad8ec5b03'

     and 'fbf3d94a0adf58cf44bd52a391f647b9ea49a5ba'

1 files changed, 6 insertions, 1 deletions

diff --git a/src/dl_group.cpp b/src/dl_group.cpp
index 9d50458dd..1b52102db 100644
--- a/src/dl_group.cpp
+++ b/src/dl_group.cpp
@@ -28,7 +28,12 @@ DL_Group::DL_Group()
 *************************************************/
 DL_Group::DL_Group(const std::string& type)
    {
-   DataSource_Memory pem(global_config().get("dl", type));
+   std::string grp_contents = global_config().get("dl", type);
+
+   if(grp_contents == "")
+      throw Invalid_Argument("DL_Group: Unknown group " + type);
+
+   DataSource_Memory pem(grp_contents);
    PEM_decode(pem);
    }