From a97dc4d447e6975b90af3ddbc8eaca40e43469ec Mon Sep 17 00:00:00 2001
From: Xavier Robin <xavier.robin@unibas.ch>
Date: Thu, 17 Oct 2024 14:32:36 +0200
Subject: [PATCH] Clarify error message.

If it's not an SDF file then the error was meaningless. Make it
clearer that we may not have an SDF file at all
---
 modules/io/src/mol/sdf_reader.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/io/src/mol/sdf_reader.cc b/modules/io/src/mol/sdf_reader.cc
index 097e4e4af..edafc0ff1 100644
--- a/modules/io/src/mol/sdf_reader.cc
+++ b/modules/io/src/mol/sdf_reader.cc
@@ -206,7 +206,7 @@ void SDFReader::ParseHeader(const String& line, int line_num,
         version_=version_str;
       }
       else {
-        String msg="Unsupported SDF version: %s.";
+        String msg="Invalid SDF file or unsupported SDF version: %s.";
         throw IOException(str(format(msg) % version_str));
       }
       // Counts will be overridden in V3000
-- 
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