I am trying to setup OpenVPN, with very little success.

The default install of OpenVPN on my router uses a preshared key instead of certs. The setup itself works fine if I use the app in Android to connect through, which you can set to use a static key, but when I try using the OpenVPN App from iOS, it has a hissy fit and says "polarssl ca certificate is undefined".

Has anyone been able to use the iOS app to connect to an OPenVPN gateway using a preshared key instead of certs?
If so, how did you resolve this issue?