Wrapped package would not compile while unwrapped compiles fine

I have a cc_clients_pkg which can be compiled without error but it will give me the following error after I wrapped it using Oracle wrap utility:

Errors for PACKAGE BODY CC_CLIENTS_PKG:

LINE/COL ERROR                                                                  
-------- -----------------------------------------------------------------      
364/6    PLS-00103: Encountered the symbol "" when expecting one of the        
         following:                                                            
         begin case declare exit for goto if loop mod null pragma              
         raise return select update while with <an identifier>                  
         <a double-quoted delimited-identifier> <a bind variable> <<            
         close current delete fetch lock insert open rollback                  
         savepoint set sql execute commit forall merge pipe                    
         The symbol "" was ignored.                                            
                                                       

Here I am going to compile it without wrapping and to show you the codes around the error line:

cc_dev@OWB1> @cmdr/v2_5c/all_sqls/cc6004_clients_pkg.sql

Sequence dropped.

Elapsed: 00:00:00.08

Sequence created.

Elapsed: 00:00:00.05

Package created.

Elapsed: 00:00:00.35
No errors.

Package body created.

Elapsed: 00:00:00.33
No errors.
cc_dev@OWB1> @lst_src2 CC_CL 350 380
old   3: where name like '&1%'
new   3: where name like 'CC_CL%'
old   4: and line > &2 and line < &3
new   4: and line > 350 and line < 380

 LINE TEXT
----- --------------------------------------------------------------------------
  351 PROCEDURE p_sel (
  352   p_key        IN     cc_clients.CLIENT_ID%TYPE DEFAULT NULL,
  353   p_whr        IN     VARCHAR2 DEFAULT NULL,
  354   p_out_num       OUT NUMBER,    -- out status number
  355   p_out_msg       OUT VARCHAR2,  -- out message
  356   p_rec           OUT rst_refcur,
  357   p_lck        IN     NUMBER DEFAULT 0 -- lock record: 0(no) 1(yes)
  358 ) IS
  359   v_prg VARCHAR2(100) := g_pkg||'.p_sel';
  360   v_sta VARCHAR2(10)  := 'OK';
  361   v_whr VARCHAR2(1000);
  362   v_msg VARCHAR2(200) := '';
  363   v_sql VARCHAR2(2000);
  364 BEGIN
  365   echo(' - '||v_prg, 1);
  366   p_out_num := 0;
  367   p_out_msg := 'OK';
  368   -- check input variables
  369   IF p_key IS NULL AND p_whr IS NULL THEN
  370     v_msg := 'ERR('||v_prg||'): no input for p_key or p_whr';
  371     raise_application_error(-20001,v_msg);
  372   END IF;
  373
  374   IF p_key IS NULL THEN
  375     v_whr := ' WHERE '||p_whr;
  376   ELSE
  377     v_whr := ' WHERE client_id = '||p_key;
  378   END IF;
  379   -- check record existence

29 rows selected.



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