m0n0wall Forum - PPTP VPN not working for one person

This is a stumper for me, maybe somebody can help shed some light?

I set up the m0n0wall and configured VPN with some firewall rules to allow certain traffic from the VPN to the LAN (namely DNS, HTTP and RDP), but while tweaking the settings, I have broken my ability to use the VPN at all except for HTTP via IP. I can connect to the m0n0wall via its LAN interface and its PPTP virtual gateway IP.

If I look at the firewall logs while attempting to connect to RDP, or DNS services, they are listed as pass, but time out on the client end.

Network IDs are as follows:
LAN: 192.168.0.0
My remote end: 192.168.1.0
PPTP virtual subnet: 192.168.102.0

Other users are not affected; are able to log into PPTP and connect to their remote desktops as intended.

I can create other users, and attempt connection from other computers, but none work. They all get as far as connecting successfully, and being able to access HTTP by IP. I have even tried resetting the m0n0wall to default settings and reconfiguring it.