Blackhole 3.0.3.A
Have done boxes for mates, and reflashed mine a few times. Never had a problem. Poor dog is scared witless with my ranting.

Going through WLAN and inputting details, getting connected to internet OK message. Going through Network Test and all green ticks. Try then to connect via VUCC or through Black Hole Addons Plugins, stating connection failed. It's also not allowing me to change WLAN settings and defaulting to LAN, so having to reflash to change network settings. Have rebooted modem and can connect to the modem on other devices.

Below are my settings:

Use Device: yes
Use DHCP: yes
Use Manual dns nameserver: no
Hidden Network: no
SSID: <my network ID>
Encrypt Method: WPA/WPA2
KEY: <my network password>

I've also tried WPA and WPA2 and WEP as encryption methods

Thanks guys