Nios 2 v6.1 fails build c++ (winXp SP2)

Hi

I am a newbie with nios.

After my 1st installation of Quartus 2 and nios 2 v6.1. I was able to compile Quartus Tutorial project and SOPC.

When I create a new C++ application in Nios 2, then add my main.c source file.

The main.c is a good file.

The problem is when I start the build. I get Error:

"Failed to convert tut01_nios_system.ptf to unix format using cygpath"

The nios logs reports:

!ENTRY com.altera.ide.core 4 0 2007-02-03 23:08:36.496

!MESSAGE Error occurred while updating SOPC Builder Cache.

Launch SOPC Builder from Quartus II for more

I launched SOPC Builder, but did not see anything.

Any ideas!

Thanks http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/huh.gif