FortiClient vpn wrong file association

I tried to setup my FortiClient SSL vpn connection in Remote Desktop Manager. When I first tried to connect it asked me to point it to the exe of FortiClient and unfortunately I chose the wrong exe. Now whenever I try to connect to the vpn it launches the wrong program and so no connection can be made.

I tried looking in my windows file/protocol associations. The registry. The contents of the Devolutions install folder. Nothing. Where is this setting held or how can I fix this? I cannot get it to re-prompt me to reassociate it with another exe.