Msim transcript error while simulating testbench

[Altera_Forum]

Hi, 

 I am trying to simulate a test bench through RTL simulation from Quartus II (15.0). I get the following error: 'Error deleting msim transcript permission denied'. Could anyone help to fix this error?  Thanks,

[Altera_Forum]

You may have an instance of the simulator running that has that file open. When you try to run another simulation, it can't do the cleanup because the previous simulation instance is still running.

[Altera_Forum]

Hi, 

 Thanks for the reply! Is there a way to fix this error without closing Modelsim? I use the Run-all option to simulate the design and also use the End simulation command to stop the simulation.    I have program for an OR gate which I am able to compile successfully in Quartus II. To simulate the design in Modelsim I am using RTL simulation. That's when the error is displayed. If I close ModelSim program and start the RTL simulation I do not encounter the error but I only get my OR gate design and not the test bench. I am not able to simulate/connect the testbench in ModelSim.

[Altera_Forum]

You need to set the test bench as the top level module in modelsim.