debugging fread when seeking somewhere past 2000 crashes Qt Creator

I'm using the CMake capability using the cl compiler and the microsoft debugger. I have code that contains the line:

readCount = fread (pBuf, 1, 2000, ifp);

This will work, but if I change the line to:

readCount = fread (pBuf, 1, 4000, ifp);

it tries to read 4000 bytes and fails. If I close the file, open it up again and seek 2000 characters in and then try to fread again, if will crash Qt Creator as well. It seems like any time I try to run the debugger when doing an fread beyond 2000 characters, it fails. I can open the same file in windbg and step through the file just fine, so I know it's not the cdb debugger. It looks like it's a problem in Qt Creator. This has been persistant from 2.0.92 all the way through 2.0.94. I didn't try any of the previous versions so I don't know if it worked pre-2.0.92. The file is a binary file, but I'm not sure if that matters.