fix nls

[ajdamico]

Microsoft Windows [Version 6.3.9600]
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C:\Users\AnthonyD>"c:\Program Files\r\R-3.3.2\bin\x64\Rterm.exe"

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> lodown::lodown("nls",output_dir="R:/National Longitudinal Surveys/")
building catalog for nls

locally downloading nls

[1] "Error in value[[3L]](cond) : error 1 in extracting from zip file\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in value[[3L]](cond): error 1 in extracting from zip file>

[1] "Error in value[[3L]](cond) : error 1 in extracting from zip file\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in value[[3L]](cond): error 1 in extracting from zip file>

[1] "Error in value[[3L]](cond) : error 1 in extracting from zip file\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in value[[3L]](cond): error 1 in extracting from zip file>

[1] "Error in value[[3L]](cond) : error 1 in extracting from zip file\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in value[[3L]](cond): error 1 in extracting from zip file>

[1] "Error in value[[3L]](cond) : error 1 in extracting from zip file\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in value[[3L]](cond): error 1 in extracting from zip file>

lodown is now exiting unexpectedly.
websites that host publicly-downloadable microdata change often and sometimes th
ose changes cause this software to break.
if the error call stack below appears to be a hiccup in your internet connection
, then please verify your connectivity and retry the download.
otherwise, please open a new issue at `https://github.com/ajdamico/lodown/issues
` with the contents of this error call stack and also the output of your `sessio
nInfo()`.

[[1]]
lodown::lodown("nls", output_dir = "R:/National Longitudinal Surveys/")

[[2]]
withCallingHandlers(catalog <- load_fun(data_name = data_name,
    catalog, ...), error = function(e) {
    if (grepl("cannot allocate vector of size", e))
        message(memory_note)
    else if (grepl("parameter must be specified", e))
        message(parameter_note)
    else if (grepl("to install", e))
        message(installation_note)
    else {
        message(unknown_error_note)
        print(sys.calls())
    }
})

[[3]]
load_fun(data_name = data_name, catalog, ...)

[[4]]
stop("tried five times with no luck.  peace out.")

[[5]]
.handleSimpleError(function (e)
{
    if (grepl("cannot allocate vector of size", e))
        message(memory_note)
    else if (grepl("parameter must be specified", e))
        message(parameter_note)
    else if (grepl("to install", e))
        message(installation_note)
    else {
        message(unknown_error_note)
        print(sys.calls())
    }
}, "tried five times with no luck.  peace out.", quote(load_fun(data_name = data
_name,
    catalog, ...)))

[[6]]
h(simpleError(msg, call))

Error in load_fun(data_name = data_name, catalog, ...) :
  tried five times with no luck.  peace out.
>

[ajdamico]

working now, no changes, no explanation