Connection Failure

I used to be able to use this program fine. Now whenever I try to connect I get:
Connection Failure
The operation couldn't be completed.
(kCFeRRORdOMAINcfnETWORK ERROR 2.)
my.ip.address:3389
I can remote desktop in to the computer using my PC, and I used to be able to remote desktop in using this software.
I have recently updated to iOS 5.0.1 though I am not sure if this related to the issue. Previously I was using iOS 4.
I am using an iPad 1.
I am connecting to an Amazon EC2 instance of Win Server 2008.
When I remote desktop from my PC I get a warning message about the server not having a valid security certificate. This never used to cause a problem with the iRemoteDesktop.
Thanks for your help!
Connection Failure
The operation couldn't be completed.
(kCFeRRORdOMAINcfnETWORK ERROR 2.)
my.ip.address:3389
I can remote desktop in to the computer using my PC, and I used to be able to remote desktop in using this software.
I have recently updated to iOS 5.0.1 though I am not sure if this related to the issue. Previously I was using iOS 4.
I am using an iPad 1.
I am connecting to an Amazon EC2 instance of Win Server 2008.
When I remote desktop from my PC I get a warning message about the server not having a valid security certificate. This never used to cause a problem with the iRemoteDesktop.
Thanks for your help!