how to avoid errors with system resources when creating a file in javascript

I am getting this error:

0x800705aa (Insufficient system resources exist to complete the requested service.

When I run the following code using the variable rawString which is coming in as a very long st

var fso = new ActiveXObject("Scripting.FileSystemObject");

var s = fso.CreateTextFile(sWIPDirectory + day + "_" + company.split(" ").join("_").split(":").join("") + "_" + type + "_" + cid + ".smtp", true);

s.writeline(rawString);

s.Close();

Is there a more efficient way to create a file with this long string?