[framework] problem with EncoderDontFallThrough

[m.p.saiarm]

hi,
    Iam facing a problem with EncoderDontFallThrough environmental 
variable if i'm running the exploit or exploits successively .Iam 
getting the following error

Error: No encoders succeeded

but actually the exploit is successful with that encoding technique.
Could anyone help me in this issue?


Thanks & Regards
    sairam