To fix issues downloading or updating to Vectric Aspire 11.5 , you should use the official V&Co customer portal
Stability Issues: These versions frequently crash during complex 3D calculations. vectric aspire 115 download fix
Rebuilt 3D Rendering: Utilizing modern graphics hardware for smoother, higher-detail 3D views. To fix issues downloading or updating to Vectric Aspire 11
After installing these, reboot again.