VNC Password is wrong

Verizon Motorola Droid X Android 2.3.3 PocketCloud Free Version 1.2.117 Mac Mini OSX 10.6.8 Wyse PocketCloud Mac Companion v0.9.1.1 (Beta) LinkSys Router running DD-WRT Port Forwarding is set up on the router for port 5900 Remote Management is on, VNC password is set Manual Connection set up on Android. Host Address is accurate, password is accurate, port is accurate, OS selection is accurate.

When I attempt to connect, I am given a popup "VNC password is wrong" and a field to enter the password. Manually entering the correct password here causes the app to think very briefly and then the same popup appears. The password is correct. I have experimented with short, very simple passwords to be sure.

The same happens if I attempt to use auto-discovery.

The app used to work well, but suddenly stopped (not sure if that coincided with an app update or not).

Any help would be appreciated!

Thanks in advance