I'm having a similar problem with Topaz Impressions 2. Every image is black - the example image that loads by default is black (but you can see it when you click 'original'); all of the preview thumbnails are black; and the saved output is black.
This is true for both the standalone Topaz Impressions 2 application and the "Impression" plugin for Topaz Studio. BUT the other plugins for Topaz Studio seem to work, i.e. the thumbnails appear and export correctly.
Also, Topaz Impressions 2 will sometimes freeze the entire computer when it's trying to load a painting effect profile (e.g. Van Gogh 1), then log me out of my session. When I log back in, it's prompting to reload the image.
Topaz Impressions 2 was working prior to installing a new video card (and running off the iGPU, an Intel HD Graphics 4600 1536 MB Integrated Graphics Card).
Here's my system setup:
MacOS Sierra 10.12.6
3.49 GHz Intel Core i7
RAM: 16 GB 1333 MHz DDR3
NVIDIA GeForce GTX 1050 2047 MB
The video card has the latest NVIDIA Web Driver: 378.05.05.24f04
I believe the video card has successfully switched over from the iGPU, q.v.:
- About This Mac>Hardware>Graphics/Displays says: Chipset Model: NVIDIA GeForce GTX 1050
- The BIOS was updated to select the NVIDIA card
- a graphics heavy game that could barely run before now hums along nicely with high frame rate.
There don't appear to be any relevant settings for the NVIDIA drivers (the MacOS control panel is very basic). The only seemingly relevant option was to switch over the OS X default driver (which sounds like a bad idea in general). Didn't seem to help.
Any thoughts or suggestions would be greatly appreciated! Thank you in advance!
P.S. I didn't start a new question because I saw someone else referred back here.
Topaz Impressions 2, default image loaded:
Topaz Impressions 2, default image visible when you click "Original":
Topaz Studio with Impressions plugin (initiated) loaded. Image and thumnails all black.
Topaz Studio, other effects are visible and export correctly.