I just upgraded to iClone 7.9 and tried to run. But I am getting 0x00007FF8BA1E8844 at 0x0000... The memory could not be read application error message. I tried sfc/scannow and no problem, and I've increased the virtual memory size and still getting the error message.  I did not have any problem with iClone 7.8. I am having the same issue with CC 3.4. Any help will be greatly appreciated.

I doubt that you could receive a qualified answer to your question here. You will have more success if you directly contact Reallusion Support. Compile and save the Dxdiag file before filling out the support form, instructions for doing that are here. 

Gerry

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System: Win 10 Pro (21H2), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver Studio-536.99), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.

Ok, thank you very much.