A strange 'debug' message, while using FrameMaker 10

Tue May 14 09:03:37 PDT 2013

Does anyone on the list ever receive strange error messages from FrameMaker?

I was in the middle of importing PDF files to layout in a structured 
FrameMaker document into FrameMaker 10.0.2.419 [or more accurately, 
10.0.3.419] and I happened to receive the attached error message "Debug 
assertion failed", with reference to:
     F:\dd\vctools\vc7libs\ship\atlmfc\src\atl\atls\atldebugapi.cpp

I don't even have Visual C++ installed on my machine!

Can anyone enlighten me with the meaning of it?

TIA
// Simon BUCH

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