A call to an OS Function failed??

Hi, I run into this error once in a while. It happens when application is
doing nothing but showing its form, but no actions or anything is performed.
I run application and IDE at the same time (by clicking application icon,
not under debugger). So, once in a very large while, it will display this
message, exception handler is constomized, so I get more info. What is
this, and how do I track this thing down??

---------------------------
My App
---------------------------
A call to an OS function failed.

(TID:6800) - 0x00467E00 - 0x00000000
Type: "EOSError" Origin: "TApplication"
---------------------------
OK Help
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