Problem during download

I download .sof with programmer (quartus II) without problem.

After that , in nios II IDE , i build project like usually , but when i press

"RUN" button and ide download .elf file happen that automatically

open programmer and console show to me this message :

"There are no NIOS II CPUs with debug modules available wich match the values

specified.Please check that your PLD is correctly configured , downloading a new SOF file if necessary "

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I cannot understand what happen , i check everythings , the system in SOPC builder , update in quartus II , download .sof file succefull, but i cannot download

application C/C++ .

For me nothing change , what i have to do , somedoby had the same problem?

This problem doesn&#39;t permit me to run and write software cpu .

.....very strange

thanks for help

ciao

walter

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