Can't play PrivateSRO's with Blackrogue files.

[Ajax1]

Dear Elitepvpers members,

Somehow I'm unable to play at any privateSRO based on blackrogue files.
Once I start client, or once I hit the start button I get the following message;
please execute the silkroad.exe.
I'm running windows 7 64 bit.
Could anyone help me out with this? I saw several good privatesilkroads based on blackrogue files, too bad I can't play at one of those.

Yours sincerely,
Bryan