After installation of Windows 7 (64 Bit) and installation of Delphi 2009 the following error “Assertion failure “(!”SetThreadContext failed”)” in “\win32src\thread32.cpp at line 434 Continue execution?” occured terminating the started application in IDE.

The IDE has to be closed per Windows Task Manager.

But there is an inofficial fix that Olaf Molien described in his blog.

There is a howto and a tool to modify the file “bordbk120N.dll”.

My IDE doesn’t throw any exception after the fix. Nice work!