Party Poker blocks Inter-Account Transfers?

[SootedPower]

I have an unverified account on Party Poker that I funded with a transfer from someone else. I played on the account for quite some time and have made numerous transfers. Today I logged in and attempted to make a transfer (after someone already sent me money on another site) and I received a message that interaccount transfers are only permitted with preferred player accounts.

Anyone else find this to be the case or is this specific to me?