Technical Support Engineer
Your signature looks dated...so just checking:
Are you really using Windows 7 vs 10? if so, why?
If you are on a Mac, are you using Parallels or some other virtualization software to run ARCHICAD? If so, what and which version and which host operating system?
And, you're saying that 22 ran without the OpenGL warning before installing 23, and now it is 22 - not 23 - that is giving you that error message?