Modelsim simulation error / couldn't open "transcript": permission denied

I'm undergraduate student and beginner of Modelsim.

I have 2 Verliog files, A that design file and the other B that testbench of A.

So in project, I compiled two files and simulate on testbench B.

I use some System tasks such as ($display and $wirte) in B file

so when I simulate the file,

there must be some comment that I write in file in Transcript.

but there is no any comment that I write using $display.

Other part of simulation have no problem but I can't see the comment.

when I first started Modelsim,

"couldn't open "transcript": permission denied" comes up in transcript.

I think it has some relation with my problem.

Please help me

Because I'm undergraduate student, I must do some projects and assignments using modelsim.