[Bug 20418] New: MetaTrader 5 beta installer silently exits when spawned

http://bugs.winehq.org/show_bug.cgi?id=20418

Summary: MetaTrader 5 beta installer silently exits when
                    spawned
           Product: Wine
           Version: 1.1.31
          Platform: PC
               URL: http://www.metaquotes.ru/files/mt5setup.exe
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: crypt32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=24225)
 --> (http://bugs.winehq.org/attachment.cgi?id=24225)
MetaTrader 5 +crypt,+relay,+seh log (lzma compressed)

With wine-1.1.31-272-g8c743cb, when trying to starting the MetaTrader 5 beta
installer, the installer silently exits. From +crypt,+relay,+seh log:

0009:Call crypt32.CryptImportPublicKeyInfo(001678e0,00010001,001680a0,0032f4fc)
ret=0040b32f
...
0009:Call
advapi32.CryptImportKey(001678e0,00168b88,00000114,00000000,00000000,0032f4fc)
ret=7edf5578
0009:trace:crypt:CryptImportKey (0x1678e0, 0x168b88, 276, 0x0, 00000000,
0x32f4fc)
0009:Call
rsaenh.CPImportKey(00000001,00168b88,00000114,00000000,00000000,00166d0c)
ret=7eb9c333
0009:trace:crypt:RSAENH_CPImportKey (hProv=00000001, pbData=0x168b88,
dwDataLen=276, hPubKey=00000000, dwFlags=00000000, phKey=0x166d0c)
0009:Ret  rsaenh.CPImportKey() retval=00000000 ret=7eb9c333
0009:Ret  advapi32.CryptImportKey() retval=00000000 ret=7edf5578
...
0009:Ret  crypt32.CryptImportPublicKeyInfo() retval=00000000 ret=0040b32f

It looks like the key import operation in rsaenh fails for some reason, causing
crypt32 to fail and the installer to silently exit. The complete compressed
+crypt,+relay,+seh is attached.