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Thank you all! CleanMyMac didn't fix the problem, so I went ahead and did a fresh wipe and install of my MacOS (High Sierra)... and when I downloaded my Chief Architect, I didn't realize that I was entitled to an upgrade, so I went from X7 to X8. Totally worked, thank you! FYI -- I never listened to advice about "cleaning house" on my Mac, but from now on, I will do a fresh install every so often. :)

@seafield thank you! Bad news, didn't work :(. Good news, I like CleanMyMac! Thanks for the tips. I'm willing to try any other ideas.

Thanks KitchenAbode, I tried reinstalling CA, but the method they listed only included deleting the application. Once I reinstalled, I noticed that my settings were still there which tells me that there are CA-related files in different places on my computer. I wish there was a way to know where all the files (libraries etc) are so I can delete everything. After just reinstalling the main application, it was still giving me the error.

Thanks Mark for the information. I tried the official Chief Architect tips for troubleshooting that error. I created a plan with just four walls and a cabinet and the error still occurred which meant it was not plan specific. Then I checked for updates and all my updates are there. I took your advice and looked at the Preferences. I tried random combinations there with no luck :(. Since ray trace worked on my older (and seemingly less powerful) laptop, I'm not sure if there's a system plug-in or conflict on my new computer. Hoping that someone who has had this problem and fixed it will see this message

Hello! I'm using X7 Interiors as I specialize in kitchen and bath. I recently bought a new iMac (specs below) hoping that Chief Architect would work better as it would suddenly quit with errors when I was running it on my 2013 MacBook Pro. The random quitting still occurs (which is annoying, but that's not my question here); however, ray trace which, ironically, worked on my 2013 MacBook Pro will not even start on my 2017 iMac. I receive the following error: /Users/autobuild/p4sync/dev/releases/17/chief/source/raytrace.cpp(619): Error #272032202 "Unable to open ray tracing engine - ray tracing disabled for this session." 10/24/2018 10:49:20 PM Build: 17.3.2.2OSX I've already tried their suggestions... I made a simple plan and it still came up with the error. Then I checked for updates in both Chief Architect and my system and they are up-to-date. I plan on upgrading in December to the newest Chief Architect assuming these problems will go away... but I'm scared that they won't. Any help or ideas would be appreciated! Thanks! Chief Architect Interiors X7 Build: 17.3.2.2OSX iMac (Retina 4K, 21.5-inch, 2017) 3.6 GHz Intel Core i7 Memory: 16 GB 2400 MHz DDR4 Video: Radeon Pro 555 2048 MB