What are you doing when this happens?
Any program that runs under windows has to follow a set of rules called "Win32".
It seems that someone or something is trying to run a program that does not follow those "Win32" rules.
It may be a program meant for another computer (Apple Mac?), it may not be a program at all (maybe it is trying to run a word document or something).
Without knowing more details it is hard to give an answer.
Can you tell us what is happening just before this error appears, is it something you are doing for example.