diff --git a/instruction.go b/instruction.go
index cb91e45..791ed8e 100644
--- a/instruction.go
+++ b/instruction.go
@@ -270,17 +270,25 @@ func ParseYAMLFile(filename, workdir string) ([]LinkInstruction, error) {
 		return nil, fmt.Errorf("error reading YAML file: %w", err)
 	}
 
-	// First try to parse as a list of link instructions
+	// First try to parse as a YAMLConfig with links and from fields
 	var config YAMLConfig
 	err = yaml.Unmarshal(data, &config)
-	if err != nil || len(config.Links) == 0 {
+	LogInfo("First parsing attempt: err=%v, links=%d, from=%d", err, len(config.Links), len(config.From))
+	if err != nil {
 		// If that fails, try parsing as a direct list of instructions
 		var instructions []LinkInstruction
 		err = yaml.Unmarshal(data, &instructions)
 		if err != nil {
 			return nil, fmt.Errorf("error parsing YAML: %w", err)
 		}
-		config.Links = instructions
+		// Filter out invalid instructions (empty source)
+		validInstructions := []LinkInstruction{}
+		for _, instr := range instructions {
+			if instr.Source != "" {
+				validInstructions = append(validInstructions, instr)
+			}
+		}
+		config.Links = validInstructions
 	}
 
 	expanded := []LinkInstruction{}