Reading an input file using std.textio

Hi,

I 'm having a problem trying to read an input file on a testbench on Incisive.

I believe the problem is due to a wrong file path, but I tried to copy the file to several folder and none worked.

The line I'm using, which worked in other simulator is:

    file input_file: text is in "test_in.txt";

On Irun command, I obtain the error:

    file input_file: text is in "test_in.txt";

    ncvhdl_p: *E,ILLPRI (../tb/tb_top.vhd, 112|35): expecting an expression or operand [7.1] [7.3].

Any idea what could be the problem?

Thank you!