Assuming that this is for a MSN socket updater
It may be that the binary variable is not set, or no data was read from the socket into the binary variable.
But just to test, i made the following:
alias test1 {
bset -t &test 1 0
echo -a $bfind(&test,1-,Authetication-Info:)
}
returns the '* Invalid parameters: $bfind (line 3, script6)' error
alias test2 {
bset -t &test 1 TEST Authentication-Info: TEST
echo -a $bfind(&test,1-,Authetication-Info:)
}
returns 1