<hr /><i>anonymous added on 2010-10-19 14:12:33:</i><br />
I wonder, could this be a related issue?

[http://msdn.microsoft.com/en-us/library/ms683197(VS.85).aspx#4]

Maybe system() does a GetModuleFileName() call internally. I <i>have</i> been using the 32-bit version of Fossil on my 64-bit OS. If Win7 64-bit screws with 32-bit GetModuleFileName() calls, a simple recompile with MinGW-w64 might fix the problem.

Well, probably not. But I'm hoping for an easy fix. :P