External Exception EEFFACE in Delphi

While debugging my application with Delphi 2009, I sometimes get the following exception occurring:

_{(source: beholdgenealogy.com)}

This only happens occasionally, but after pressing OK, then my IDE and program both may freeze. If I am lucky I can sometimes do a File/SaveAll in Delphi, but sometimes I can't. Either way I am stuck and then the only thing I can do is use Windows Task Manager to shut down Delphi. Of course, if I was unable to SaveAll, then I lose all the edits I had made since last saving.

I have all the Delphi 2009 Updates installed right up to and including Update 4. I also have IDE Fix Pack 2009 2.9 installed.

The Error is trapped for me by EurekaLog, and the error report gives the following call stack:

Call Stack Information:
-----------------------------------------------------------------------------------------------------------
|Address |Module              |Unit               |Class             |Procedure/Method          |Line     |
-----------------------------------------------------------------------------------------------------------
|Running Thread: ID=5068; Priority=0; Class=; [Main]                                                      |
|---------------------------------------------------------------------------------------------------------|
|205669C6|dbkdebugide120.bpl  |Debug.pas          |TDebugger         |DBKWndProc                |11598[6] |
|777DE49A|ntdll.dll           |                   |                  |KiUserExceptionDispatcher |         |
|7705E0CB|kernel32.dll        |                   |                  |RaiseException            |         |
|03E8E3E8|dcc120.dll          |WRITEOBJ.OBJ       |                  |C62_0