Rules for using save states and memory card saves without corruption?

[falconzinx]

Are there any rules to follow when using save states so that memory card save files are not corrupted?
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(description of problem)
It seems like on occasion,
when I frequently either save or load a state,
it becomes impossible to make a save on a memory card,
with an in-game message mentioning something along the lines of "memory card is corrupted".

When I try to make a new memory card file,
and load the state,
I still cannot make a save back into the new memory card file either.

When I load from the memory card again,
I'm able to return to where I last left off and can make a save state,
and then save back onto the memory card without any problems.
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Is this kind of occasional memory card corruption from save states something to do with how the Dolphin emulator handles the save state and memory card data?
For instance, I notice that saves are claimed as successful in-game before the message of a successful memory card write pops up, 
implying I should be waiting for that message to pop up before closing the emulator.