How to get detailed error messages from Performance Center?

Hi!

How can I get the detailed error messages from PC?

I use ALM 12.21 and work with HTTP/HTML protocol. 

When I run a single LR script at my desktop computer, after a replay I can see all detailed information about my run: for every request I can see the Request Body, Responce Body, Headers etc. This information is saved at output.txt file under script directory.

While I run load test via PC (Performance Center) or via ALM I can get only output.mdb.zip file which contains only error messages.

How can I get the detailed information like at output.txt file?

Thanks.