httputils2 fails to find temp folder

Using httputils2, in getstring2, it periodically errors out at the line

httpjob:
tr.Initialize2(File.OpenInput(HttpUtils2Service.TempFolder, taskId), Encoding)

giving this error:

java.io.filenotfoundexception:/data/data/jack/smsint.doo/cache/7pen failed: ENOENT(no such file or directory)

It appears to be looking for the temp directory and not finding it?
Any idea?