Could not find rtl_work.TB.vhd

Thank you for the involvement.

But if i modify the.do quartus will erase it (as he did), how do i compile in quartus (Not in modelsim)?

Vcom is a modelsim command, and the.do will be erased.

Sorry, i'm totally newbie to VHDL. I don't know to compile outside of modelsim and actual errors are in quartus as you say.

PS: I've cheked the work label inside of properties of pack.vhdl and ProducteN.vhd files within the quartus directory. And the error keeps the same.

Sorry, sorry.