SAS 连接WRDS报错:无法加载传输模块，求解决~

【本人代码如下】

LIBNAME WRDS 'D:\SAS Projects\WRDS';
%let wrds = wrds.wharton.upenn.edu 4016;
options comamid=TCP remote=WRDS;
signon username=_prompt_;
rsubmit;
libname crspa '/wrds/crsp/sasdata/a_stock';
proc sql;
        create table example as
        select *
        from crspa.dsf;
quit;
proc download data=example out=wrds.example1;
run;
endrsubmit;

【日志结果如下】
1    LIBNAME WRDS 'D:\SAS Projects\WRDS';
NOTE: 已成功分配逻辑库引用名“WRDS”，如下所示:
       引擎:        V9
       物理名: D:\SAS Projects\WRDS
2    %let wrds = wrds.wharton.upenn.edu 4016;
3    options comamid=TCP remote=WRDS;
ERROR:  BRIDGE FAILURE - ERROR LOADING IMAGE
        MODULE: saszrlnk SUBSYSTEM: 314 SLOT: 2


Traceback:
00000000047C284D  0000000024B4F4D8  sasxshel:tkvercn1+0x180D
00000000047C19D5  0000000024B4F690  sasxshel:tkvercn1+0x995
00000000047EB040  0000000024B4F7D0  sasxshel:tkvercn1+0x2A000
00000000048145DE  0000000024B4FAB0  sasxshel:tkvercn1+0x5359E
0000000004817C6C  0000000024B4FBA0  sasxshel:tkvercn1+0x56C2C
000000000481A500  0000000024B4FBF0  sasxshel:tkvercn1+0x594C0
00000000032683AB  0000000024B4FF20  sashost:Main+0x10F1B
000000000326DFDD  0000000024B4FF50  sashost:Main+0x16B4D
00007FFBA2EA8364  0000000024B4FF58  KERNEL32:BaseThreadInitThunk+0x14
00007FFBA5AC5E91  0000000024B4FF88  ntdll:RtlUserThreadStart+0x21?

4    signon username=_prompt_;
ERROR: 无法加载传输模块（桥接失败）。

不知应该如何解决？