Cisco Firewall :: ASA 5510 - Static NAT For Outside Access Not Working?

I've got an ASA 5510 that has been working like a charm for some time now. Until now we've not had to nat any resources to the outside. I created network objects for an internal host and an external host. The internal host has to respond to requests on tcp/2001.
 
The internal host has no problem accessing the internet, but when I attempt to access the internal host from the outside, I get the following:
 
4    Sep 20 2011    16:20:33        fw_outside_ip    62678    outside_host    2001    Deny tcp src outside:outside_host_ip/62678 dst inside_host:inside_host_ip/2001 by access-group "outside_access_in" [0x0, 0x0]
 
When I try to use the packet tracer to simulate the outside traffic, I get the following
 
5    Sep 20 2011    16:17:41        inside_host    2001            Asymmetric NAT rules matched for forward and reverse flows; Connection for tcp src outside:outside_host/1065 dst inside_int:inside_host/2001 denied due to NAT reverse path failure
 
I've got over my NAT statement and access rule and can't find anything wrong with either.
 
Here are the pertinent NAT and access rule...
 
static (inside_int,outside) tcp interface 2001 inside_host 2001 netmask 255.255.255.255
 
access-list outside_access_in extended permit tcp host outside_host host inside_host eq 2001