The error just came up again. I am using the version listed above (3.00.2505 beta).
I just noticed something however. After the error came up and I clicked the OK button to close the message window I noticed that the sensor panel was not updating any information afterwards. Thinking AIDA64 was frozen I tried double clicking on the program icon in the system tray and the main window came up right away. It was responsive and I could interact with it. Then thinking that just the sensor panel window was frozen I tried moving it around and I could. I tried to interact with the panel by right clicking on one the displayed items and choosing modify. The "modify item" window came up and I was able to adjust the settings for the item I clicked. But after clicking OK to close the "modify item" window the sensor panel did not update to show what I changed (I simply changed the text name for it).
Thinking back now I believe the sensor panel may have always froze after I was getting the error...since v2.85. I just never really paid much attention to the sensor panel after getting the error as I would simply quit and restart AIDA64 and then it would working normally again.
Hope that helps to track down the issue. I can send you my sensor panel config if you want.