I have now tested the AtikGP with Steallarmate version 1.5.7 running with Kstars version 3.5.2. The AtikGP now appears to be working fine, it allows you to send commands to the camera to take exposures without crashing. However, the AtikGP is only showing as 640x480 pixels and not 1296x964 pixels when using the AtikGP driver from the indi control panel. When you use the AtikCCD driver from the indi control panel the chip is recognised as 1296x964 pixels, but this crashes the indi driver whenever a command is sent to the camera. I trust this information will allow you to correct the driver. I have responded with this information to the email I got from support@atik-cameras.com, I have just posted this here in case anyone else is experiencing the same issue.
Darren