cfftp secure bug?

having a wierd issue here.   i believe it may be a bug in CF.

code:

<cfftp secure="true" action="open" server="#ftpserver#" port="#ftpport#" username="#username#" password="#password#" fingerprint="#fingerprint#" connection="myftp">

<cfftp action="getfile" connection="myftp" remotefile="testfile.txt" localfile="E:\tmp\testfile.txt" transfermode="binary" passive="true"/>

throws error

An error occurred during the sFTP getfile operation. Error: File Exists: E:\tmp\testfile.txt

Folder view shows a file testfile.txt   0 bytes.  and it's locked (presumably by cf server)

It seems like the operation is creating the file stub, but has some problem writing to it, then complains that the file exists when cf created the file in the first place.

this is only in secure mode.  in regular FTP mode, code runs perfectly.

Stack trace:

coldfusion.tagext.net.SftpHandler$SftpOperationException: An error occurred during the sFTP getfile operation.

at coldfusion.tagext.net.SftpHandler.checkError(SftpHandler.java:195)

at coldfusion.tagext.net.SftpHandler.getFile(SftpHandler.java:475)

at coldfusion.tagext.net.FtpTag.doStartTag(FtpTag.java:740)

at coldfusion.runtime.CfJspPage._emptyTcfTag(CfJspPage.java:2722)

at cffedexImport2ecfm385136567.runPage(E:\htdocs\Pmall_Admin\autoTasks\fedexImport.cfm:32)

at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:231)

at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:416)

at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)

at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:381)

at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:48)

at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)

at coldfusion.filter.PathFilter.invoke(PathFilter.java:94)

at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70)

at coldfusion.filter.BrowserDebugFilter.invoke(BrowserDebugFilter.java:79)

at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:28)

at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)

at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46)

at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)

at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)

at coldfusion.filter.CachingFilter.invoke(CachingFilter.java:62)

at coldfusion.CfmServlet.service(CfmServlet.java:200)

at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)

at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)

at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42)

at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)

at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)

at jrun.servlet.FilterChain.service(FilterChain.java:101)

at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)

at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)

at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)

at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)

at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)

at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)

at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)

at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)

at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)