Resolve ambiguity in parser by adding separate 'empty' sequences.

	modified:   controller/controller_load_parser.y

controller/controller/controller_load_parser.y

@@ -141,11 +141,14 @@ import: IMPORTSYM stringvar
 		}
 	;
 
-aliases: ALIASSYM BRACEOPENSYM aliaslist BRACECLOSESYM
+aliases: ALIASSYM BRACEOPENSYM maybealiaslist BRACECLOSESYM
+
+maybealiaslist : aliaslist
+	|
+	;
 
 aliaslist: alias
 	| alias aliaslist
-	|
 	;
 
 alias: BRACEOPENSYM
@@ -158,11 +161,14 @@ alias: BRACEOPENSYM
 		}
 
 
-triggers: TRIGGERSYM BRACEOPENSYM triggerlist BRACECLOSESYM
+triggers: TRIGGERSYM BRACEOPENSYM maybetriggerlist BRACECLOSESYM
+
+maybetriggerlist : triggerlist
+	|
+	;
 
 triggerlist: trigger
 	| trigger triggerlist
-	|
 	;
 
 trigger	: BRACEOPENSYM
@@ -188,13 +194,16 @@ blocks	: BLOCKSSYM PARENTHESESOPENSYM doublevar COMMASYM doublevar
 				    &frequency, &delay);
 			controller_time_param_set(frequency, delay);
 		}
-	 PARENTHESESCLOSESYM BRACEOPENSYM blocklist BRACECLOSESYM
+	 PARENTHESESCLOSESYM BRACEOPENSYM maybeblocklist BRACECLOSESYM
+
+maybeblocklist: blocklist
+	|
+	;
 
 blocklist: block 
 	| module
 	| block blocklist
 	| module blocklist
-	|
 	;
 
 block	: BRACEOPENSYM
@@ -266,11 +275,14 @@ moduleoutput : BRACEOPENSYM
 		}
 	    BRACECLOSESYM
 
-params	: PARAMSSYM BRACEOPENSYM paramlist BRACECLOSESYM
+params	: PARAMSSYM BRACEOPENSYM maybeparamlist BRACECLOSESYM
+
+maybeparamlist : paramlist
+	|
+	;
 
 paramlist: param
 	| param paramlist
-	|
 	;
 
 param	: BRACEOPENSYM
@@ -406,11 +418,14 @@ set:	SETSYM VARIABLENAMESYM doublevar
 		{ controller_load_variable_string_set($2, $3); }
 	;
 
-links	: LINKSSYM BRACEOPENSYM linklist BRACECLOSESYM
+links	: LINKSSYM BRACEOPENSYM maybelinklist BRACECLOSESYM
+
+maybelinklist : linklist
+	|
+	;
 
 linklist: link
 	| link linklist
-	|
 	;
 
 link	: BRACEOPENSYM
@@ -480,11 +495,14 @@ link	: BRACEOPENSYM
 		}
 	;
 
-traces	: TRACESSYM BRACEOPENSYM tracelist BRACECLOSESYM
+traces	: TRACESSYM BRACEOPENSYM maybetracelist BRACECLOSESYM
+
+maybetracelist : tracelist
+	|
+	;
 
 tracelist: trace
 	| trace tracelist
-	|
 	;
 
 trace	: BRACEOPENSYM