wrapper a 32bit program using Wineskin Winery

I am trying to wrapper a 32bit program, but it failed to run. log is lilke

Unhandled exception: page fault on read access to 0x00000000 in 32-bit code (0x00368dad).
Register dump:
 CS:001b SS:0023 DS:0023 ES:0023 FS:1007 GS:000f
 EIP:00368dad ESP:0066f6b4 EBP:0066f958 EFLAGS:00210246(  R- --  I  Z- -P- )
 EAX:0066f900 EBX:0066f9e4 ECX:ffffffff EDX:00000000
 ESI:0066f9f8 EDI:00000000
Stack dump:
0x0066f6b4:  0000022e 0066fab0 0037fb8a 0066f6cc
0x0066f6c4:  0037fbe4 0066f958 0066f968 0037fc11
0x0066f6d4:  0066f958 0066f9e4 00000000 00000000
0x0066f6e4:  00000000 00000000 00000000 00781f74
0x0066f6f4:  00000000 00022e00 00000000 00000000
0x0066f704:  00000000 00000000 00000000 00000000
0200: sel=1007 base=7ffc0000 limit=00000fff 32-bit rw-

Seems that Wineskin treat program as 64 bit by default. How can I switch it to 32 bit? Thanks!