NIOS2 IDE problem

This may sound like a hoaky answer but try it. I have personally experienced this several times and haven't been able to explain the cause.

1 - Close everything (Quartus, SoPC builder, and NIOS II IDE)

2 - Launch Quartus and open your project.

3 - Launch SoPC builder.

4 - Re-generate your SoPC design.

5 - Close SoPC builder (very important).

6 - Compile the project in Quartus.

7 - Launch the NIOS IDE.

8 - Make sure your system library is pointing to the correct PTF.

9 - Recompile your NIOS project and visually make sure that it is recompiling the system library.

10 - Now try it.

Jake