Runtime Error 5105

Hey there, glad to see TreeIt is being updated again! I was trying to load in my own trunk textures and crashed with this error (screenshot below). it crashed on the roughness image. I don't know what this means but I have a decent spec pc that can run Treeit five times over so I doubt it was on my end. Hopefully this helps. if you have any questions about anything related to the error let me know.

I think it may be greyscale images that break, although i could be wrong?

Size them down to 512x512, for me that solved it.
Hope this helps!

SOS

I'm trying to run Tree It from a Mac. I've downloaded BootCamp to mimic a PC and it's working flawlessly, I've downloaded Tree It but can't get the program to open. I've tried troubleshooting and am out of options. Can anyone point me in the right direction/let me know if this is even possible?

Thanks!

LJ