Problem with stored procedure

I have a database with two tables, Comics and Summary. Comics contains a list of 1000s of individual issues with each record corresponding to an individual issue, and the columns include a name and an issue number (amongst other things). The Summary table is currently empty but once I get the stored procedure running will contain a list in of all the titles in Comics, with record corresponding to a title, and include a columns name and summary. In the Summary table, the purpose of the summary column is to express a single text string which issues are available for an individual title. The purpose of the stored procedure is to build the Summary table from Comics. In other words, to use a cursor to iterate through the Comics and populate Summary accordingly.

For example, say that Comics has the following records:

Comic A    1

Comic A   2

Comic A   3

Comic A   5

Comic B   2

Comic B   4

Comic B   5

Comic B   6

Then the stored procedure would insert the following to the Summary table:

Comic A   1-3, 5

Comic B   2, 4-6

I have written a stored procedure that I thought would more or less work, perhaps a bit of fine tuning, but would get me most of the way there. The strange is that when I run the stored procedure, it doesn't insert even a single row into the Summary table, the table remains completely empty regardless. I attempt to run the SP by right clicking on it and selecting "Execute Stored Procedure". I'm not quite sure what to do. If it were inserting records incorrectly, it would just a matter of adjusting some of the logic, but as such there is nothing to go on. Can you see anything wrong with my code?

USE [comics]
GO


SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[ComicList] 

AS
	DECLARE @name VARCHAR(50)
	DECLARE @issue INT
	DECLARE @prevname VARCHAR(50)
	DECLARE @previssue INT
	DECLARE @summary VARCHAR(200)
	DECLARE @rangestart INT
BEGIN TRY

	SET NOCOUNT ON;

	SET @summary = ''

	DECLARE com_cursor CURSOR FAST_FORWARD FOR SELECT Name, Issue FROM Comics ORDER BY Name, Issue
	
	OPEN com_cursor
	FETCH NEXT FROM com_cursor INTO @name, @issue
	SET @prevname = @name
	SET @previssue = @issue - 1
	SET @rangestart = @issue

	WHILE @@FETCH_STATUS = 0
	BEGIN
		IF (@name = @prevname)
		BEGIN
			IF (@issue <> @previssue + 1)
			BEGIN
				IF (@rangestart < @previssue)
				BEGIN
					IF (LEN(@summary) > 0)
					BEGIN
						SET @summary = @summary + ', ' + @rangestart + '-' + @previssue
					END
					ELSE
					BEGIN
						SET @summary = @rangestart + '-' + @previssue
					END
				END
				ELSE
				BEGIN
					IF (LEN(@summary) > 0)
					BEGIN
						SET @summary = @summary + ', ' + @rangestart
					END
					ELSE
					BEGIN
						SET @summary = @rangestart
					END
				END
				SET @rangestart = @issue
			END
		END
		ELSE
		BEGIN
			IF (@rangestart < @previssue)
			BEGIN
				IF (LEN(@summary) > 0)
				BEGIN
					SET @summary = @summary + ', ' + @rangestart + '-' + @previssue
				END
				ELSE
				BEGIN
					SET @summary = @rangestart + '-' + @previssue
				END
			END
			ELSE
			BEGIN
				IF (LEN(@summary) > 0)
				BEGIN
					SET @summary = @summary + ', ' + @rangestart
				END
				ELSE
				BEGIN
					SET @summary = @rangestart
				END
			END
			INSERT INTO Summary (Name, Summary) VALUES (@prevname, @summary)
			SET @summary = ''
			SET @rangestart = @issue
		END

		SET @prevname = @name
		SET @previssue = @issue
		FETCH NEXT FROM com_cursor INTO @name, @issue
	END

    CLOSE com_cursor    
	DEALLOCATE com_cursor 

END TRY
BEGIN CATCH 
   PRINT 'There was an error. Check to make sure object exists.' 
   IF CURSOR_STATUS('variable', 'col_cursor') <> -3 
   BEGIN 
       CLOSE com_cursor    
       DEALLOCATE com_cursor  
   END 
END CATCH 


GO