QTR-Quadtone RIP

If this  is posted a second time I apologize. I'm running snow leopard and have run into the problem of not being able to install a new curve. When I put the ink descriptor file into the install folder & install, a dialogue box from Terminal tells me that QRT doesn't recognize epson 7800, therefore my curve does not show up in the QRT print dialogue 'choose curve'. QTR was already installed (latest version & patch installed after snow leopard was installed). My QRT printer is Quad7800.

My second problem is the ink separation file will not print. I've set Mode to QuadTone RIP Calibration but the paper just moves through the printer unprinted.

A final question. I use an iOne but am not sure how to measure the Lab values.

Any answers would be appreciated. Thanks
Joel