Could not find rtl_work.TB.vhd

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Sorry, i moved the Pack.vhd before ProducteN.vhd (in the .tcl and saved) and still error.

error (10481): vhdl use clause error at producten.vhd(3): design library "work" does not contain primary unit "fixed_package"

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Saving the Tcl is not adequate. You must also run the Tcl from the Quartus console. You do that by sourcing the file.

tcl> source PFC.tcl

If you do not see a Tcl console in the GUI, make it appear using View->Utility Windows->Tcl Console.

Cheers,

Dave