Dear Pyayt,
Thank you for the question, and I am very sorry about the issue!
I'm wondering if you import the climate file into a brand new file, does it work on that file?
There can be a couple of reasons why the climate file can't be opened by Archicad. Since the data is visible as shown in the screenshot, I believe the issue may not come from Archicad. I will forward the information to the Technical Support team for further investigation. In the meantime, could you share with us the climate file you are using?
Thank you very much!
Best regards,
Minh
Minh Nguyen
Technical Support Engineer
GRAPHISOFT