SQL Server script: ALTER PROCEDURE - Executing multiple ALTER PROCEDURE into one script without having to select each of the ALTER one after another

Question

I know this is not a big issue, but it tickles me anyway.

1. I have a SQL Server 2005 script to create new data tables, constraints, altering some tables to add columns, altering procedures to take the table changes into account, etc.
2. Everything runs fine until the script encounters my ALTER PROCEDURE statements.
3. The error message is as follows:

"Msg 156, Level 15, State 1, Procedure cpromo_Get_ConsultDetails_PromotionBan, Line 59 Incorrect syntax near the keyword 'PROCEDURE'.

Here's a sample of my script:

ALTER PROCEDURE [dbo].[cpromo_Get_ConsultDetails_PromotionBan] 
(
 @idPromoBan int, 
 @uid int 
)
AS
begin
 set nocount on;

 /* 1-  detail de la promo */
 SELECT p.[nopromo], p.[StartDate], p.[EndDate], p.[DateText]
 FROM [cpromo_PromotionBanniere] as pb
 INNER JOIN [cpromo_Promotions] as p ON p.[idPromo] = pb.[idPromo]
 WHERE (pb.[idPromoBan] = @idPromoBan)

 /* 2 - cartes de la promo */
 SELECT pis.[idCardText], ct.[nom], ct.[descr], ct.[prix], ct.[prixCoupon], ct.[qtyItem], i.[Impact]
 FROM [cpromo_PromotionsItems] as pis
 INNER JOIN [cpromo_Impacts] as i ON i.[idImpact] = pis.[idImpact] 
 INNER JOIN [cpromo_CardText] as ct ON ct.[idCardText] = pis.[idCardText]
 WHERE (pis.[idPromoBan] = @idPromoBan)
 ORDER BY i.[iorder], ct.[nom];

 /* 3 - pvedettes opti */
 SELECT m.[idCardText], m.[qtyCardL], m.[qtyCardM], m.[qtyCardMG], m.[qtyCardS],
     ISNULL(m.[qtyCardMini], 0) as qtyCardMini,
     ISNULL(m.[qtyCardMiniPTJ], 0) as qtyCardMiniPTJ
 FROM [cpromo_MEMCards] as m
 INNER JOIN [cpromo_CardText] as ct ON ct.[idCardText] = m.[idCardText]
 WHERE (m.[idPromoBan] = @idPromoBan)
 ORDER BY ct.[nom];


 /* 4 - cart */
 SELECT [idCartEl], [idCardText], [qtyL], [qtyM], [qtyMG], [qtyS],
     ISNULL([qtyMini], 0) as qtyMini,
     ISNULL([qtyMiniPTJ], 0) as qtyMiniPTJ
 FROM [cpromo_UserCarts]
 WHERE ([uid] = @uid AND [idPromoBan] = @idPromoBan);
end


ALTER PROCEDURE [dbo].[cpromo_Get_CartItems_ByPromotionBan] 
(
 @uid int,
 @idPromoBan int 
)
AS
begin
 set nocount on;

 SELECT ct.nom, ct.descr, p.DateText, ct.prix, ct.prixCoupon, ct.qtyItem,
           uc.qtyL, uc.qtyM, uc.qtyMG, uc.qtyS,
     isnull(uc.qtyMini, 0) as qtyMini,
     isnull(uc.qtyMiniPTJ, 0) as qtyMiniPTJ, 3 as qteLimite
 FROM cpromo_UserCarts as uc
 INNER JOIN cpromo_CardText as ct ON ct.idCardText = uc.idCardText 
 INNER JOIN cpromo_PromotionBanniere as pb ON pb.idPromoBan = uc.idPromoBan 
 INNER JOIN cpromo_Promotions  as p ON p.idPromo = pb.idPromo
 WHERE (uc.uid = @uid) AND (uc.idPromoBan = @idPromoBan);
end

The error points toward the first 'end' keyword encountered when double-clicked. What I don't get at all is when selecting one ALTER statement after another, it runs just fine and smooth! When I try to run them all by pressing [F5] with no selection, it gives me the error.

I tried to embed the ALTER statements into another BEGIN...END, but no luck, it says that there's a syntax error near the keyword ALTER...

EDIT: Can it be because I comment the modifications performed after the begin statement?

ALTER PROCEDURE [dbo].[cpromo_Get_ConsultDetails_PromotionBan] 
    (
     @idPromoBan int, 
     @uid int 
    )
    AS
    begin
------------------
-- Added column to take table changes into account blah blah blah...
------------------
     set nocount on;

     /* 1-  detail de la promo */
     SELECT p.[nopromo], p.[StartDate], p.[EndDate], p.[DateText]
     FROM [cpromo_PromotionBanniere] as pb
     INNER JOIN [cpromo_Promotions] as p ON p.[idPromo] = pb.[idPromo]
     WHERE (pb.[idPromoBan] = @idPromoBan)

     /* 2 - cartes de la promo */
     SELECT pis.[idCardText], ct.[nom], ct.[descr], ct.[prix], ct.[prixCoupon], ct.[qtyItem], i.[Impact]
     FROM [cpromo_PromotionsItems] as pis
     INNER JOIN [cpromo_Impacts] as i ON i.[idImpact] = pis.[idImpact] 
     INNER JOIN [cpromo_CardText] as ct ON ct.[idCardText] = pis.[idCardText]
     WHERE (pis.[idPromoBan] = @idPromoBan)
     ORDER BY i.[iorder], ct.[nom];

     /* 3 - pvedettes opti */
     SELECT m.[idCardText], m.[qtyCardL], m.[qtyCardM], m.[qtyCardMG], m.[qtyCardS],
         ISNULL(m.[qtyCardMini], 0) as qtyCardMini,
         ISNULL(m.[qtyCardMiniPTJ], 0) as qtyCardMiniPTJ
     FROM [cpromo_MEMCards] as m
     INNER JOIN [cpromo_CardText] as ct ON ct.[idCardText] = m.[idCardText]
     WHERE (m.[idPromoBan] = @idPromoBan)
     ORDER BY ct.[nom];


     /* 4 - cart */
     SELECT [idCartEl], [idCardText], [qtyL], [qtyM], [qtyMG], [qtyS],
         ISNULL([qtyMini], 0) as qtyMini,
         ISNULL([qtyMiniPTJ], 0) as qtyMiniPTJ
     FROM [cpromo_UserCarts]
     WHERE ([uid] = @uid AND [idPromoBan] = @idPromoBan);
    end

Thank's for any help or any cue.

Answer 1

This answer is not mine as it is the result of all the answers I have gotten. Each answer has a part of the solution, so I wanted to put an answer with all the points to the solution.

1. Insert a "GO" statement between each and every ALTER PROCEDURE statement (Everyone who answered)
2. Make sure there are no invisible characters in the white space area (Arvo)
3. The BEGIN...END statements revealed to be unnecessary (Mayo)
4. The semi-colons removal within the AS...GO as per procedure core seemed to cause some trouble either (Mayo)
5. The comments within the procedure core as described in my question's edit don't matter, it didn't cause any error once the above points were checked (Myself)

Hope this will help someone someday.

Thanks to everyone, credits go to all of you!